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Whether you're testing \u003cstrong\u003ehydroponic solutions, educational labs, tap\/drinking water, swimming pools, or water treatment systems\u003c\/strong\u003e, this tester ensures precise results every time.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eUnmatched Accuracy \u0026amp; Performance\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eAdvanced BPB (Brush-Resistant Platinum Black) Sensor\u003c\/strong\u003e – Reduces electrode polarization, extends measurement range, and delivers \u003cstrong\u003ehigher accuracy\u003c\/strong\u003e than conventional stainless steel electrodes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWide Measurement Range:\u003c\/strong\u003e Covers \u003cstrong\u003e0-200.0 µS\/cm, 0-2000 µS\/cm, 0-20.00 mS\/cm, and 0-50.0˚C\u003c\/strong\u003e, ensuring versatility across applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eAuto Temperature Compensation (ATC):\u003c\/strong\u003e Provides \u003cstrong\u003e±1% full scale accuracy and 0.5˚C precision\u003c\/strong\u003e, adapting to environmental fluctuations for trustworthy readings.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eSmart Features for Effortless Testing\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e3-Point Auto Calibration with Auto Buffer Recognition\u003c\/strong\u003e – Achieves quick, reliable calibrations for optimal accuracy.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eClear Dual Display\u003c\/strong\u003e – The \u003cstrong\u003elarge, 180˚ viewing angle screen\u003c\/strong\u003e shows temperature and EC values simultaneously, along with indicators for completed auto calibrations and stable readings.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSelf-Diagnosis System\u003c\/strong\u003e – Detects out-of-range errors, \u003cstrong\u003elow battery warnings\u003c\/strong\u003e, and \u003cstrong\u003eincorrect calibration reminders\u003c\/strong\u003e, keeping your measurements dependable.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eDurable, Portable \u0026amp; 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Whether you’re \u003cstrong\u003eoptimizing nutrient absorption, balancing EC levels, or ensuring effective water treatment\u003c\/strong\u003e, this tester eliminates \u003cstrong\u003eguesswork\u003c\/strong\u003e and puts \u003cstrong\u003elab-grade accuracy at your fingertips\u003c\/strong\u003e, helping you \u003cstrong\u003emaximize plant health and boost yields effortlessly\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhy Choose GroStar® GS4-P?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe GS4-P isn’t just a tester—it’s a \u003cstrong\u003ecomprehensive solution designed for growers who take their results seriously\u003c\/strong\u003e. Equipped with a \u003cstrong\u003eSwiss-engineered double-junction pH sensor and a titanium conductivity probe\u003c\/strong\u003e, this meter \u003cstrong\u003edelivers ultra-fast, stable readings\u003c\/strong\u003e, ensuring \u003cstrong\u003elong-term durability even in challenging conditions\u003c\/strong\u003e. The \u003cstrong\u003eintegrated ORP probe\u003c\/strong\u003e gives growers \u003cstrong\u003ecritical insights into water quality and oxidation-reduction potential\u003c\/strong\u003e, helping them \u003cstrong\u003emonitor disinfection levels, nutrient uptake, and microbial activity\u003c\/strong\u003e for a healthier growing environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePrecision \u0026amp; Long-Term Reliability\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSwiss Double-Junction pH Sensor\u003c\/strong\u003e – Provides \u003cstrong\u003ehigh-precision pH readings\u003c\/strong\u003e while minimizing \u003cstrong\u003econtamination for extended lifespan\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTitanium Conductivity Sensor\u003c\/strong\u003e – Ensures \u003cstrong\u003efast, stable EC and ppm measurements\u003c\/strong\u003e with superior \u003cstrong\u003eresistance to corrosion and environmental conditions\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIntegrated ORP Probe\u003c\/strong\u003e – Allows \u003cstrong\u003eoxidation-reduction potential monitoring\u003c\/strong\u003e, making it an \u003cstrong\u003eessential tool for water treatment, disinfection, and nutrient balance\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTruRead Measurement Mode\u003c\/strong\u003e – Automatically collects multiple readings, displaying \u003cstrong\u003eaverage, minimum, and maximum values\u003c\/strong\u003e for deeper analysis and more reliable results.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDesigned for Effortless Calibration \u0026amp; User-Friendly Operation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQuick 2-Point Automatic Calibration\u003c\/strong\u003e – Ensures \u003cstrong\u003eseamless, stress-free calibration\u003c\/strong\u003e, so you get \u003cstrong\u003eprecise results every time\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eElectrode Condition Display\u003c\/strong\u003e – Lets you know \u003cstrong\u003ewhen recalibration is needed\u003c\/strong\u003e, ensuring \u003cstrong\u003econsistency and reliability\u003c\/strong\u003e in every reading.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e3-Color Backlit LCD Screen\u003c\/strong\u003e – Provides \u003cstrong\u003einstant readability in bright, dim, or dark environments\u003c\/strong\u003e, making \u003cstrong\u003etesting easy under any conditions\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReplaceable Probe Design\u003c\/strong\u003e – Saves costs, allowing \u003cstrong\u003esimple probe replacements without discarding the entire device\u003c\/strong\u003e for \u003cstrong\u003elong-term usability\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDurability Meets Practicality\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWaterproof \u0026amp; Impact-Resistant Construction\u003c\/strong\u003e – Designed for \u003cstrong\u003eharsh field conditions, greenhouse environments, and hydroponic setups\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCompact \u0026amp; Portable Design\u003c\/strong\u003e – \u003cstrong\u003eEasy to carry\u003c\/strong\u003e, ensuring \u003cstrong\u003eeffortless testing in multiple locations\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eBuilt for Growers Who Demand Results\u003c\/strong\u003e – Perfect for \u003cstrong\u003ehydroponics, greenhouse cultivation, commercial farming, and research applications\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eBoost Your Yield with Unmatched Accuracy \u0026amp; Convenience\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eFrom \u003cstrong\u003enutrient balance to water quality monitoring\u003c\/strong\u003e, the \u003cstrong\u003eGroStar® GS4-P 6-in-1 Combo Pen Tester (Gen II)\u003c\/strong\u003e gives you \u003cstrong\u003elab-grade precision in an intuitive, easy-to-use package\u003c\/strong\u003e. 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Get your GroStar® GS4-P today\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Apera Instruments","offers":[{"title":"Default Title","offer_id":50139787100458,"sku":"BTS-AI204G","price":245.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/gs4_ph_ec_combo_-ec_screen.webp?v=1745349216"},{"product_id":"milwaukee-t76-waterproof-high-range-total-dissolved-solids-pen-tds","title":"Milwaukee T76  Waterproof High Range Total Dissolved Solids Pen (TDS)","description":"\u003cdiv style=\"max-width: 1400px; margin: 0 auto; padding: 40px 20px;\n                        font-family: 'Open Sans', sans-serif; font-weight: 300;\n                        color: #333; background: #fff; font-size: 0.95rem;\n                        box-sizing: border-box;\"\u003e\n              \u003cdiv style=\"display: flex; flex-direction: column; gap: 20px;\"\u003e\n                \u003cdiv class=\"productView-desc-content\" itemprop=\"description\"\u003e\n\n                \u003ch1\u003e\u003cstrong\u003eDigital. Simple. Compact.\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Milwaukee T76 Waterproof High Range Total Dissolved Solids (TDS) Pen is designed for, aquariums, aquaculture, education, pools, water conditioning and many other applications. The T76 helps you make sure that your fish have the right TDS balance to help them stay healthy. TDS also help keep filters up-to-date and clean for water filtration or pools. Keep TDS in your target range to help your achieve better results.\u003c\/p\u003e\n\u003ch2\u003eDesign Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures Total Dissolved (TDS) direct. \u003c\/li\u003e\n\u003cli\u003eEasy-to-read LCD.\u003c\/li\u003e\n\u003cli\u003eIdeal range for aquariums and pools (0 to 9990 ppm).\u003c\/li\u003e\n\u003cli\u003eAutomatic temperature compensation.\u003c\/li\u003e\n\u003cli\u003eUnits in ppm easily convertible to \u003cspan\u003eµS\/cm\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003eFactory calibrated with the ability to recalibrate if needed.\u003c\/li\u003e\n\u003cli\u003eUse \u003cstrong\u003eM10038B\u003c\/strong\u003e 6.44 ppt solutions.\u003c\/li\u003e\n\u003cli\u003e250 hours continuous use (3 x 1.5V batteries included).\u003c\/li\u003e\n\u003cli\u003eSimple one point calibration.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFully waterproof to IP65.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eReplaceable TDS electrode \u003cstrong\u003eMA73076\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eCare and Use\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eMaintenance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTDS\/PPM electrodes can develop nutrient build up over time. To minimize build up, always rinse the probe in fresh tap or DI water after every use.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eConverting TDS to EC\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Milwaukee TDS Pen, like all TDS meters, provides a measure of Total Dissolved Solids (ppm) reading, of contaminates per unit of volume in a solution.\u003c\/p\u003e\n\u003cp\u003eTDS\/PPM is often converted to µS\/cm. Different scales include the 500 scale, 650 scale and the 700 scale. \u003c\/p\u003e\n\u003cp\u003eYour TDS\/PPM readings can be approximately converted to µS\/cm as shown in the examples below.\u003c\/p\u003e\n\u003cp\u003e1 ppm = 2 µS\/cm on the 0.5 factor scale\u003cbr\u003e\u003cspan\u003e1 ppm = 1.43 µ\u003c\/span\u003eS\/cm on the 442 scale or .70 factor scale\u003c\/p\u003e\n\u003cdiv class=\"uCalc_222669\"\u003e \u003c\/div\u003e\n\u003cp\u003eThank you for considering Milwaukee to help you take your results to the next level.\u003c\/p\u003e\n\n                \u003c!-- snippet location product_description --\u003e\n\n            \u003c\/div\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e","brand":"Milwaukee Instruments","offers":[{"title":"Default Title","offer_id":50549130232106,"sku":"BTS-T76","price":56.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/T76-Front-Cap-On__01756.1605893684.jpg?v=1756585872"},{"product_id":"milwaukee-mw101-pro-ph-meter","title":"Milwaukee MW101 PRO pH Meter","description":"\u003cdiv style=\"max-width: 1400px; margin: 0 auto; padding: 40px 20px;\n                        font-family: 'Open Sans', sans-serif; font-weight: 300;\n                        color: #333; background: #fff; font-size: 0.95rem;\n                        box-sizing: border-box;\"\u003e\n              \u003cdiv style=\"display: flex; flex-direction: column; gap: 20px;\"\u003e\n                \u003cdiv class=\"productView-desc-content\" itemprop=\"description\"\u003e\n\n                \u003ch1\u003e\u003cstrong\u003eLab Grade. Engineered for Value.\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Milwaukee MW101 PRO pH meter has won fans around the world with its reliable, fast operation as well as its rugged design and accuracy.\u003c\/p\u003e\n\u003ch2\u003eWhat People Are Saying\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\"This is an awesome pH meter!\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\"I love this little meter.\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\"Rugged portable meter, calibrates easily with pH 4, 7 and 10 buffers, readings dead on.\"\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003eThe Milwaukee MW101 PRO pH meter has won fans around the world with its reliable, fast and simple operation as well as its toughness and accuracy.\u003c\/p\u003e\n\u003cp\u003eThe Milwaukee PRO pH Meter is preferred by people testing samples that cause other pH testers and meters to fail from brewers and wine makers to hydroponic growers and farmers.\u003c\/p\u003e\n\u003cp\u003eThe Milwaukee PRO pH meter offers:\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpeed\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe MW101 delivers fast results to ±0.02 pH accuracy with two point calibration.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eToughness\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe rugged meter is designed to take knocks. Paired with low maintenance, lab grade SE220\u003cspan id=\"productTitle\" class=\"a-size-large\"\u003e double junction, gel filled electrode, the MW101 is ideal for everyone from educators and pool professionals to brewers and growers.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDesign features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFast easy to read results with large digital LCD readout.\u003c\/li\u003e\n\u003cli\u003e±0.02 pH accuracy \u0026amp; 0.01 pH resolution.\u003c\/li\u003e\n\u003cli\u003eLightweight and portable.\u003c\/li\u003e\n\u003cli\u003eEasy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilize.\u003c\/li\u003e\n\u003cli\u003e3’ probe cables for extra flexibility.\u003c\/li\u003e\n\u003cli\u003eManual two-point calibration for increased accuracy.\u003c\/li\u003e\n\u003cli\u003eGel-filled, double junction lab grade pH electrode for low maintenance and high performance\u003cspan class=\"Apple-converted-space\"\u003e.\u003c\/span\u003e\u003cspan class=\"Apple-converted-space\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eAcid Based calibrations, cleaning \u0026amp; storage solutions use \u003cstrong\u003ePH-START\u003c\/strong\u003e  add \u003cstrong\u003eMA9010\u003c\/strong\u003e (10.01 cal. buffer) or \u003cstrong\u003eM10010B\u003c\/strong\u003e if Basic cal. required.\u003cspan class=\"Apple-converted-space\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eAuto shut off and low power demand for approx. 300 hours of continuous use (battery included).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUse and Care \u003c\/h2\u003e\n\u003cp\u003epH meters usually start performing poorly because of problems with the probe. The two parts of the pH probe that cause problems are the glass sensing bulb and the reference junction.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSensing bulb\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe glass bulb loses sensitivity with use and will eventually fail. This is true of all pH probes.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eReference junction\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe reference junction is a small hole that allows the meter to compare the sample to a reference. The reading is generated based on the electrical difference between the sample and reference. If the junction hole gets clogged, the pH probe will no longer function.\u003c\/p\u003e\n\u003cp\u003eYou can extend the life of your pH electrode in the following ways.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCleaning and Storage\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAll pH sensors have a limited life and response time gets longer with age. Properly maintaining your pH pen tester will give you fast, accurate results for longer. So, be sure to order the Milwaukee pH Maintenance Kit code \u003cstrong\u003ePH-Main\u003c\/strong\u003e at checkout time!  This will be needed to help clean and condition the pH electrode before use!\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe pH probe needs to be kept hydrated. Long periods of dry storage will damage the sensitivity of the probe. Allowing the probe to dry out may also result in the junction hole getting clogged.\u003c\/p\u003e\n\u003cp\u003eStore the pH probe in storage solution MA9015. Only use tap water short-term if \u003cstrong\u003eMA9015\u003c\/strong\u003e is not immediately available and \u003cstrong\u003eNEVER store in distilled Water (DI) or Reverse Osmosis (RO) water. This will damage the sensitivity of the probe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe best way to store the probe is with the probe's cap filled with storage solution or calibration buffer and the cap tightened to prevent leakage. It is also recommended that to store the electrode upright to further reduce the potential for leakage.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCleaning\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eResidue from the sample can impact the sensitivity of the sensing bulb and clog the junction. This is especially true if the sample has a lot of organic material. We recommend regularly soaking your electrode in cleaning solution \u003cstrong\u003eMA9016\u003c\/strong\u003e \u003cstrong\u003efor about 20 minutes.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe pH sensing bulbs become less sensitive over time so make sure that you are calibrating regularly to keep your PRO pH meter accurate. \u003cspan style=\"font-weight: 400;\"\u003eAlso, calibrate after cleaning or a long period of storage.  For BEST value, order the \u003cstrong\u003ePH-START\u003c\/strong\u003e Kit.  This has the MA9004 (230 mL bottle of 4.01 calibration Solution), MA9007 (230 mL bottle of 7.01 calibration Solution), MA9015 (230 mL bottle of Storage Solution), MA9016 (230 mL bottle of Cleaning Solution) all in one kit.\u003c\/span\u003e\u003c\/p\u003e\n\n                \u003c!-- snippet location product_description --\u003e\n\n            \u003c\/div\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e","brand":"Milwaukee Instruments","offers":[{"title":"Default Title","offer_id":50549130264874,"sku":"BTS-MW101","price":193.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/MW101__44326.1608134806.jpg?v=1756585872"},{"product_id":"milwaukee-mw802-pro-3-in-1-ph-ec-tds-combo-meter-with-atc","title":"Milwaukee MW802 PRO 3-in-1 pH, EC, TDS Combo Meter with ATC","description":"\u003cdiv style=\"max-width: 1400px; margin: 0 auto; padding: 40px 20px;\n                        font-family: 'Open Sans', sans-serif; font-weight: 300;\n                        color: #333; background: #fff; font-size: 0.95rem;\n                        box-sizing: border-box;\"\u003e\n              \u003cdiv style=\"display: flex; flex-direction: column; gap: 20px;\"\u003e\n                \u003cdiv class=\"productView-desc-content\" itemprop=\"description\"\u003e\n\n                \u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThis Milwaukee 3-in-1 combo meter allows you to measure pH, EC (conductivity) and TDS with a single meter and one single probe.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eWhat People Are Saying\u003c\/h2\u003e\n\u003cp\u003e\"Superb meter, easy to use, great customer service.\"\u003c\/p\u003e\n\u003cp\u003e\"Best meter I have ever owned.\"\u003c\/p\u003e\n\u003cp\u003e\"The best meter on the market and Milwaukee customer service is the best.\"\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\"I have owned this meter for almost 8 years and only replaced the probe once. The calibration nobs are easy to use, and even when I am less then gentle with the thing it keeps on going. I wouldn't consider any other meter.\"\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003epH and conductivity are critical for growers. pH can effect plant nutrient and water uptake and reduce the efficiency of fertilizer, herbicides and pesticides. Managing c\u003c\/span\u003e\u003cspan\u003eonductivity helps growers pinpoint fertilizer and other needs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Milwaukee MW802 PRO Combo Meter lets you easily and accurately test pH, conductivity and total dissolved solids (TDS) using a single meter and integrated probe. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSimple, portable and rugged. No more juggling multiple electrodes and wires. Automatic temperature compensaton included.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe MW802 is the ultimate solution for pH and nutrient management.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eDesign Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe design of the MW802 is focused on simple operation and ruggedness. With a single probe, big screen, easy calibration, the MW802 is exceptionally simple to operate. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA tough meter build and a rugged but replaceable probe means that you can expect years of use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Milwaukee PRO Combo meter offers:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"atf-features\"\u003e\n\u003cli\u003epH, conductivity \/ nutrient EC, TDS (ppm) \u003cspan\u003ewith automatic temperature compensation\u003c\/span\u003e.\u003c\/li\u003e\n\u003cli\u003eA replaceable, integrated pH, EC, and TDS (ppm) probe with a single 3 foot cable for easy use (\u003cstrong\u003eSE600\u003c\/strong\u003e probe included).\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA fiber junction on the pH sensor to reduce contamination when measuring fertilizer solutions. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eA light weight and portable form factor at just 5.8 ounces with battery and just over 3 inches wide.\u003c\/li\u003e\n\u003cli\u003eA large easy to read display.\u003c\/li\u003e\n\u003cli\u003eFactory calibration with a simple, single point manual calibration for both pH and EC.\u003c\/li\u003e\n\u003cli\u003eA reputation for a rugged build and long life\u003c\/li\u003e\n\u003cli\u003eSpecialized design for hydroponic, aquaponic, and greenhouse growers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCare and Use \u003c\/h2\u003e\n\u003cp\u003eThe MW802 PRO Combo Meter includes both a pH and EC sensor in the SE600 integrated probe.  All pH sensors have a limited life and response time gets longer with age.  EC sensors are more robust but can still be affected by residue build up. Both need maintenance. Properly maintaining your probe will give you fast, accurate results for longer.  So, be sure to order the Milwaukee pH Maintenance Kit code \u003cstrong\u003ePH-Main\u003c\/strong\u003e at checkout time!  This will be needed to help clean and condition the pH\/EC electrode before use!\u003c\/p\u003e\n\u003cp\u003eStore the pH probe in storage solution MA9015.  Only use tap water short-term if \u003cstrong\u003eMA9015\u003c\/strong\u003e is not immediately available and \u003cstrong\u003eNEVER store in distilled Water (DI) or Reverse Osmosis (RO) water. This will damage the sensitivity of the probe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHere are our top four tips.\u003cbr\u003e \u003cbr\u003e1. Always store with the cap full of Storage Solution \u003cstrong\u003eMA9015 for BEST RESULTS\u003c\/strong\u003e. \u003cbr\u003e2. Clean your probe regularly by soaking in cleaning solution \u003cstrong\u003eMA9016 for about 20 minutes\u003c\/strong\u003e. \u003cbr\u003e3. Calibrate after cleaning and\/or storage before testing to adjust for changes in the pH and EC sensor.\u003cbr\u003e4. Gently stir the probe in the sample for a faster result.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTo ensure the meter's stated accuracy, be sure to order the Combo-Start Kit our BEST Value here: \u003cstrong\u003eCOMBO-START\u003c\/strong\u003e Kit.  This has the MA9007 (230 mL bottle of 7.01 calibration Solution), MA9061 (230 mL bottle of 1,413 uS calibration Solution), MA9015 (230 mL bottle of Storage Solution), MA9016 (230 mL bottle of Cleaning Solution) all in one kit.  For the TDS you will need \u003cstrong\u003eM10442B.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThank you for considering Milwaukee to help you take your results to the next level.\u003c\/p\u003e\n\n                \u003c!-- snippet location product_description --\u003e\n\n            \u003c\/div\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e","brand":"Milwaukee Instruments","offers":[{"title":"Default Title","offer_id":50549130297642,"sku":"BTS-MW802","price":296.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/MW802__17792.1608140234.jpg?v=1756585872"},{"product_id":"milwaukee-ph600aq-digital-ph-pen","title":"Milwaukee pH600AQ Digital pH Pen","description":"\u003cdiv style=\"max-width: 1400px; margin: 0 auto; padding: 40px 20px;\n                        font-family: 'Open Sans', sans-serif; font-weight: 300;\n                        color: #333; background: #fff; font-size: 0.95rem;\n                        box-sizing: border-box;\"\u003e\n              \u003cdiv style=\"display: flex; flex-direction: column; gap: 20px;\"\u003e\n                \u003cdiv class=\"productView-desc-content\" itemprop=\"description\"\u003e\n\n                \u003ch1\u003e\u003cstrong\u003eDigital. Simple. Compact.\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eOver 200,000 people\u003c\/strong\u003e have relied on the Milwaukee pH600AQ compact pH pen tester to move from difficult to use and interpret pH strips to digital testing.\u003c\/p\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003eThe Milwaukee pH600AQ compact pen tester is specifically designed to help maintain aquariums and aquaculture. Keeping the proper pH improves results for aquarium fish and quality in a range of fish raised in aqulculture.\u003c\/p\u003e\n\u003cp\u003eUse digital accuracy to keep pH in your target range for better results.\u003c\/p\u003e\n\u003ch2\u003eWhat people are saying\u003c\/h2\u003e\n\u003cp\u003e\"Accurate results and calibrated right out of the box.\"\u003c\/p\u003e\n\u003cp\u003e\"Must have for any aquarium owner.\"\u003c\/p\u003e\n\u003cp\u003e\"Good value. Easy to use. Consistent.\"\u003c\/p\u003e\n\u003ch2\u003eDesign features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFast, accurate results with digital LCD readout.\u003c\/li\u003e\n\u003cli\u003eEasy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilize.\u003c\/li\u003e\n\u003cli\u003eSimple one-point calibration with an easy-to-use trimmer located on the back of the pH tester to protect from accidental splashes.\u003c\/li\u003e\n\u003cli\u003eCap to protect the pH sensor and keep it wet when stored upright.\u003c\/li\u003e\n\u003cli\u003eLow power demand for extended battery life (batteries included).\u003c\/li\u003e\n\u003cli\u003eApproximate 700 hours of batter use (3 x 1.5 Volt batteries included).\u003c\/li\u003e\n\u003cli\u003eFor Calibration USE \u003cstrong\u003eMA9007\u003c\/strong\u003e 230 mL bottle of 7.01 pH calibration solution or \u003cstrong\u003eM10007B\u003c\/strong\u003e box of (25 sachets 20 mL each) calibration solution.  These solutions are required to operate the meter properly along with the below links for cleaning and maintaining instructions \u003cstrong\u003ePH-MAIN\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUse and Care\u003c\/h2\u003e\n\u003cp\u003eAll pH sensors have a limited life and response time gets longer with age. Properly maintaining your pH pen tester will give you fast, accurate results for longer. So, be sure to order the Milwaukee pH Maintenance Kit code \u003cstrong\u003ePH-Main\u003c\/strong\u003e at checkout time!  This will be needed to help clean and condition the pH electrode before use!\u003c\/p\u003e\n\u003cp\u003eStore the pH probe in storage solution MA9015. Only use tap water short-term if \u003cstrong\u003eMA9015\u003c\/strong\u003e is not immediately available and \u003cstrong\u003eNEVER store in distilled Water (DI) or Reverse Osmosis (RO) water. This will damage the sensitivity of the probe.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHere are our top four tips. \u003c\/p\u003e\n\u003cp\u003e1. Always store upright with the cap full of \u003cstrong\u003eMA9015 Storage solution\u003c\/strong\u003e for \u003cstrong\u003eBEST RESULTS\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e2. Clean your pH Pen Tester regularly by soaking in cleaning solution \u003cstrong\u003eMA9016\u003c\/strong\u003e. \u003cstrong\u003eCleaning Solution for about 20 minutes\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e3. Calibrate after cleaning and\/or storage before testing to adjust for changes in the pH sensor.\u003c\/p\u003e\n\u003cp\u003e4. Gently stir the Pen in the sample for a faster result.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThank you for considering Milwaukee to help you take your results to the next level.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\n                \u003cdiv\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/BLWUhpop3P4\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c!-- snippet location product_description --\u003e\n\n            \u003c\/div\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e","brand":"Milwaukee Instruments","offers":[{"title":"Default Title","offer_id":50549130330410,"sku":"BTS-pH600AQ","price":40.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/pH600-front-cap__99700.1608146986.jpg?v=1756585872"},{"product_id":"grow-hydro-tee","title":"Grow Hydro Tee","description":"\u003cdiv style=\"max-width: 1400px; margin: 0 auto; padding: 40px 20px; font-family: 'Open Sans', sans-serif; font-weight: 300; color: #333; background: #fff; font-size: 0.95rem; box-sizing: border-box;\"\u003e\n  \u003cdiv style=\"display: flex; flex-direction: column; gap: 20px;\"\u003e\n    \u003cdiv class=\"productView-desc-content\" itemprop=\"description\"\u003e\n\n      \u003ch2\u003eProduct Overview\u003c\/h2\u003e\n      \u003cp\u003eThe Milwaukee Grow Hydro Tee is designed for those who love to showcase their unique style while maintaining comfort throughout the day. Crafted with 100% cotton, this tee ensures a soft and breathable fit that makes it ideal for various activities, from casual outings to indoor relaxing sessions.\u003c\/p\u003e\n\n      \u003cp\u003eFeaturing the iconic Milwaukee Instruments logo on the front and an eye-catching Grow Hydro graphic on the back, this t-shirt combines fashion with function. It's not just a clothing item; it's a wardrobe statement for the modern individual who appreciates quality and creativity.\u003c\/p\u003e\n\n      \u003ch3\u003eKey Features\u003c\/h3\u003e\n      \u003cp\u003eChoose the Milwaukee Grow Hydro Tee for several benefits, including:\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003eAvailable in sizes Small, Medium, Large, and Extra Large, offering the perfect fit for everyone.\u003c\/li\u003e\n        \u003cli\u003eDurable and long-lasting 100% cotton material, perfect for everyday wear, ensuring ultimate comfort.\u003c\/li\u003e\n      \u003c\/ul\u003e\n\n      \u003cp\u003eThis versatile tee is not just for the die-hard Milwaukee fans but for anyone wanting to make a stylish statement. Pair it with jeans, shorts, or yoga pants, and experience ultimate fashion freedom while being comfortable. Explore the essence of Milwaukee culture with the Grow Hydro Tee and stand out in any crowd.\u003c\/p\u003e\n\n      \u003cp\u003eOrder yours today and be part of the Milwaukee Instruments family; embrace quality, durability, and style!\u003c\/p\u003e\n\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Milwaukee Instruments","offers":[{"title":"Small","offer_id":50577916002602,"sku":"BTS-Grow-Hydro-Tee-1","price":23.94,"currency_code":"USD","in_stock":true},{"title":"Medium","offer_id":50577916035370,"sku":"BTS-Grow-Hydro-Tee-2","price":23.94,"currency_code":"USD","in_stock":true},{"title":"Large","offer_id":50577916068138,"sku":"BTS-Grow-Hydro-Tee-3","price":23.94,"currency_code":"USD","in_stock":true},{"title":"XL","offer_id":50577916100906,"sku":"BTS-Grow-Hydro-Tee-4","price":23.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/Grow_Hydro_Folded__55188.1610509278.jpg?v=1756585899"},{"product_id":"ma957-co2-flow-pressure-regulator-with-solenoid-valve","title":"MA957 CO2  Flow Pressure Regulator with Solenoid Valve","description":"\u003cdiv style=\"max-width: 1400px; margin: 0 auto; padding: 40px 20px; font-family: 'Open Sans', sans-serif; font-weight: 300; color: #333; background: #fff; font-size: 0.95rem; box-sizing: border-box;\"\u003e  \n    \u003cdiv style=\"display: flex; flex-direction: column; gap: 20px;\"\u003e  \n        \u003cdiv class=\"productView-desc-content\" itemprop=\"description\"\u003e  \n            \u003ch2\u003eDescription\u003c\/h2\u003e  \n            \u003cp\u003eThe Milwaukee MA957 CO2 Flow Pressure Regulator is engineered for precision and durability in CO2 delivery systems, making it an essential component for both aquarium enthusiasts and hydroponic growers. This adjustable pressure regulator features high-quality brass fittings that ensure a secure connection and long-lasting performance in diverse environments. Whether you are using it for your aquarium or within a sophisticated hydroponic setup, this regulator meets the demanding needs of your plants and aquatic life.\u003c\/p\u003e  \n            \u003cp\u003eEquipped with a reliable solenoid, the MA957 allows for seamless automation when integrated with compatible Milwaukee controllers. The 4-foot power cord offers flexible installation options, simplifying setup in various configurations. With diaphragm valves and a built-in bubble counter, you can easily monitor CO2 flow to optimize conditions for your plants or fish.\u003c\/p\u003e  \n            \u003ch3\u003eKey Features\u003c\/h3\u003e  \n            \u003cul\u003e  \n                \u003cli\u003eHigh-quality brass fittings ensure durability and a leak-proof connection, providing peace of mind.\u003c\/li\u003e  \n                \u003cli\u003eCompatible with all Milwaukee controllers, such as the MC122 and MC125, allowing for versatile use in your system.\u003c\/li\u003e  \n            \u003c\/ul\u003e  \n            \u003cp\u003eThis CO2 flow pressure regulator is designed not only for functionality but also for ease of use, making it perfect for both novice and experienced users alike. The package includes one regulator, ensuring you have everything you need to enhance your setup right out of the box.\u003c\/p\u003e  \n        \u003c\/div\u003e  \n    \u003c\/div\u003e  \n\u003c\/div\u003e","brand":"Milwaukee Instruments","offers":[{"title":"Default Title","offer_id":50549131936042,"sku":"BTS-MA957","price":163.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/MA957__16708.1614099223.jpg?v=1756585900"},{"product_id":"ma955-co2-gas-off-solenoid-valve","title":"MA955 CO2 Gas\/Off Solenoid Valve","description":"\u003cdiv style=\"max-width: 1400px; margin: 0 auto; padding: 40px 20px; font-family: 'Open Sans', sans-serif; font-weight: 300; color: #333; background: #fff; font-size: 0.95rem; box-sizing: border-box;\"\u003e\n    \u003cdiv style=\"display: flex; flex-direction: column; gap: 20px;\"\u003e\n        \u003cdiv class=\"productView-desc-content\" itemprop=\"description\"\u003e\n            \u003ch2\u003eDescription\u003c\/h2\u003e\n            \u003cp\u003eThe Milwaukee MA955 CO2 Gas On\/Off Solenoid Valve is the perfect solution for your aquarium and hydroponics setup. Designed for reliability and performance, this robust valve features high-quality brass fittings that ensure durability and long-lasting operation, making it an essential element for maintaining optimal CO2 levels in your aquatic environments.\u003c\/p\u003e\n            \u003cp\u003eCompatibility is key, and the MA955 is designed to work seamlessly with all Milwaukee controllers, enhancing its versatility. This solenoid valve operates on standard 110V power and includes a convenient 4-foot cord for easy installation and connection near your equipment. Its ease of use helps you maintain consistent conditions in your tank or planting system without hassle.\u003c\/p\u003e\n            \u003ch3\u003eKey Features\u003c\/h3\u003e\n            \u003cul\u003e\n                \u003cli\u003eHigh-quality brass fittings for durability in aquarium and hydroponics applications.\u003c\/li\u003e\n                \u003cli\u003eCompatible with all Milwaukee controllers for versatile applications.\u003c\/li\u003e\n                \u003cli\u003eStandard 110V power requirements and a convenient 4' cord for flexible installation.\u003c\/li\u003e\n            \u003c\/ul\u003e\n            \u003cp\u003eThe Milwaukee MA955 CO2 Gas On\/Off Solenoid Valve is not just a tool; it’s a gateway to achieving optimal growth and health for your plants and aquatic life. Ensure proper CO2 regulation and unlock the potential of your environment with this high-performance valve. Get your Milwaukee MA955 today and experience the difference in your aquarium or hydroponics system!\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Milwaukee Instruments","offers":[{"title":"Default Title","offer_id":50549131968810,"sku":"BTS-MA955","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/MA955__47338.1614098255.jpg?v=1756585900"}],"url":"https:\/\/bluetigerscientific.com\/collections\/hydroponics.oembed","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}