{"product_id":"milwaukee-ec45-pro-ec-tds-cf-nutrient-stick-meter","title":"Milwaukee EC45 PRO EC\/TDS\/CF Nutrient Stick Meter","description":"\u003cdiv style=\"font-family:'Open Sans',sans-serif;color:#333;background:#fff;font-size:15px;line-height:1.6;max-width:1100px;margin:0 auto;padding:22px 16px;box-sizing:border-box;\"\u003e\n\u003csection style=\"padding:22px;background:#F1F7F3;border:1px solid #B7D0BF;border-radius:8px;margin:0 0 22px;\"\u003e\u003ch2 style=\"margin:0 0 12px;color:#245B45;font-size:25px;line-height:1.2;\"\u003eStir, check, adjust. Keep nutrient strength in view.\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eThe Milwaukee EC45 PRO turns a reservoir spot check into a simple routine. Immerse the sensor head, stir the nutrient solution and read the illuminated scale. EC, CF and two ppm scales share the same stick, so you can work in the units used by your feeding program without doing a manual conversion.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure style=\"margin:20px auto;max-width:360px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/EC45-0.webp?v=1794422057\" alt=\"Milwaukee EC45 PRO EC TDS CF nutrient stick meter\" loading=\"lazy\" style=\"display:block;width:100%;height:auto;object-fit:contain;background:#fff;border-radius:6px;\"\u003e\u003cfigcaption style=\"font-size:12px;line-height:1.4;color:#555;padding:9px 2px;\"\u003eEC45 PRO nutrient stick with four printed measurement scales.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003ch2 style=\"font-size:21px;line-height:1.25;color:#245B45;margin:26px 0 12px;\"\u003eMatch the scale to your nutrient program\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eUse the \u003cstrong\u003e0.2 to 6.0 mS\/cm EC range\u003c\/strong\u003e for conductivity checks, or read 2 to 60 CF. TDS is calculated from conductivity: the 500 scale covers 100 to 3000 ppm and the 700 scale covers 140 to 4200 ppm. Keep the same conversion scale when comparing readings with your target; the two ppm scales are not interchangeable.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eThe EC45 checks overall nutrient-solution conductivity. It does not measure pH, identify individual nutrients or control a dosing pump. Its role is a quick, repeatable strength check during hydroponic, horticultural and agricultural solution management.\u003c\/p\u003e\n\u003cfigure style=\"margin:20px auto;max-width:480px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/EC45-1.webp?v=1794422057\" alt=\"EC45 printed EC, CF and two TDS scales in close-up\" loading=\"lazy\" style=\"display:block;width:100%;height:auto;object-fit:contain;background:#fff;border-radius:6px;\"\u003e\u003cfigcaption style=\"font-size:12px;line-height:1.4;color:#555;padding:9px 2px;\"\u003eScale detail: match the EC, CF or ppm scale to your nutrient program.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003ch2 style=\"font-size:21px;line-height:1.25;color:#245B45;margin:26px 0 12px;\"\u003eFrom first use to a stable reading\u003c\/h2\u003e\n\u003col style=\"margin:0 0 18px;padding-left:22px;\"\u003e\n\u003cli style=\"margin:0 0 10px;\"\u003e\n\u003cstrong\u003ePrepare the meter.\u003c\/strong\u003e Remove the protective battery film, then screw the battery cap back on tightly.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 10px;\"\u003e\n\u003cstrong\u003eImmerse and stir.\u003c\/strong\u003e Place the probe head in the nutrient solution. The meter starts automatically; blinking indicates a reading that is still stabilizing.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 10px;\"\u003e\n\u003cstrong\u003eRead the steady LED.\u003c\/strong\u003e Use the EC, CF or appropriate ppm scale. The 24 blue LEDs make the scale easy to locate. Automatic temperature compensation operates from 5 to 50 °C.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 10px;\"\u003e\n\u003cstrong\u003eRinse and put away.\u003c\/strong\u003e The meter switches off 30 seconds after the reading stabilizes. A change in conductivity resets the timer. For another check, remove it from the solution and immerse it again.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 style=\"font-size:21px;line-height:1.25;color:#245B45;margin:26px 0 12px;\"\u003eFactory calibrated, not maintenance free\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eNo user calibration is required. Keep the graphite electrodes clean so deposits do not compromise your checks. Rinse after each use and carry out the more thorough monthly cleaning described in the manual. The removable crown cap gives access to the sensor area. Store the meter clean and dry in its protective packaging.\u003c\/p\u003e\n\u003cfigure style=\"margin:20px auto;max-width:340px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/EC45-3.webp?v=1794422057\" alt=\"EC45 graphite sensor head and removable crown cap\" loading=\"lazy\" style=\"display:block;width:100%;height:auto;object-fit:contain;background:#fff;border-radius:6px;\"\u003e\u003cfigcaption style=\"font-size:12px;line-height:1.4;color:#555;padding:9px 2px;\"\u003eRemovable crown cap for access during electrode cleaning.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003ch2 style=\"font-size:21px;line-height:1.25;color:#245B45;margin:26px 0 12px;\"\u003eWhat comes with the EC45\u003c\/h2\u003e\n\u003cul style=\"margin:0 0 18px;padding-left:22px;\"\u003e\n\u003cli style=\"margin:0 0 8px;\"\u003eEC45 PRO nutrient stick meter\u003c\/li\u003e\n\u003cli style=\"margin:0 0 8px;\"\u003eThree 1.5 V AA batteries\u003c\/li\u003e\n\u003cli style=\"margin:0 0 8px;\"\u003ePlastic tube packaging, instrument quality certificate and instruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eThe floating casing is rated IP67. Battery life is approximately three years at ten measurements per day, and the LED scale provides a low-battery indication. Replace batteries before they are exhausted and keep the cap securely closed.\u003c\/p\u003e\n\u003cfigure style=\"margin:20px auto;max-width:340px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/EC45-2.webp?v=1794422057\" alt=\"EC45 battery compartment detail\" loading=\"lazy\" style=\"display:block;width:100%;height:auto;object-fit:contain;background:#fff;border-radius:6px;\"\u003e\u003cfigcaption style=\"font-size:12px;line-height:1.4;color:#555;padding:9px 2px;\"\u003ePowered by three AA alkaline batteries. Follow the manual when replacing them.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003ch2 style=\"font-size:21px;line-height:1.25;color:#245B45;margin:26px 0 12px;\"\u003eManuals \u0026amp; brochures\u003c\/h2\u003e\n\u003ca href=\"https:\/\/milwaukeeinstruments.com\/content\/manuals\/ISTEC45_02_26.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display:block;text-decoration:none;background:#111;color:#fff;border:1px solid #245B45;border-left:7px solid #245B45;border-radius:8px;padding:22px;margin:16px 0;\"\u003e\u003cspan style=\"display:block;color:#B7D0BF;font-size:12px;font-weight:700;letter-spacing:1px;\"\u003eOFFICIAL PDF MANUAL\u003c\/span\u003e\u003cstrong style=\"display:block;font-size:19px;margin:8px 0;\"\u003eMilwaukee EC45 PRO instruction manual\u003c\/strong\u003e\u003cspan style=\"display:block;font-size:14px;line-height:1.4;\"\u003eMeasurement scales, battery setup, cleaning and care. Open the complete manual →\u003c\/span\u003e\u003c\/a\u003e\u003ch2 style=\"font-size:21px;line-height:1.25;color:#245B45;margin:26px 0 12px;\"\u003eBuild the right workflow\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003e\u003cstrong\u003eRelated workflow:\u003c\/strong\u003e \u003ca href=\"\/products\/milwaukee-mw100-pro-ph-meter\" style=\"color:#245B45;text-decoration:underline;\"\u003eMilwaukee MW100 PRO pH Meter\u003c\/a\u003e. Add a separate pH measurement alongside nutrient-strength checks.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003e\u003cstrong\u003eRelated workflow:\u003c\/strong\u003e \u003ca href=\"\/products\/milwaukee-mw802-pro-3-in-1-ph-ec-tds-combo-meter-with-atc\" style=\"color:#245B45;text-decoration:underline;\"\u003eMilwaukee MW802 PRO 3-in-1 pH, EC, TDS Combo Meter with ATC\u003c\/a\u003e. Consider a portable pH, EC and TDS combo meter when those measurements belong in one instrument.\u003c\/p\u003e\n\u003ch2 style=\"font-size:21px;line-height:1.25;color:#245B45;margin:26px 0 12px;\"\u003eQuestions before you choose\u003c\/h2\u003e\n\u003cdetails style=\"border:1px solid #e0e0e0;border-radius:8px;padding:15px;margin:0 0 10px;background:#fff;line-height:1.15;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;line-height:1.15;\"\u003eDoes the EC45 measure pH?\u003c\/summary\u003e\u003cdiv style=\"padding-top:12px;line-height:1.15;\"\u003eNo. It measures electrical conductivity and displays CF and conductivity-derived TDS. Use a separate pH meter for acidity or alkalinity checks.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-radius:8px;padding:15px;margin:0 0 10px;background:#fff;line-height:1.15;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;line-height:1.15;\"\u003eWhich ppm scale should I use?\u003c\/summary\u003e\u003cdiv style=\"padding-top:12px;line-height:1.15;\"\u003eMatch your nutrient program: the 500 scale reads 100 to 3000 ppm; the 700 scale reads 140 to 4200 ppm. A reading on one scale should not be compared directly with a target on the other.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-radius:8px;padding:15px;margin:0 0 10px;background:#fff;line-height:1.15;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;line-height:1.15;\"\u003eDo I need calibration solution?\u003c\/summary\u003e\u003cdiv style=\"padding-top:12px;line-height:1.15;\"\u003eThe EC45 is factory calibrated and requires no user calibration. Cleaning the graphite electrodes remains part of regular care.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-radius:8px;padding:15px;margin:0 0 10px;background:#fff;line-height:1.15;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;line-height:1.15;\"\u003eHow do I know the reading is stable?\u003c\/summary\u003e\u003cdiv style=\"padding-top:12px;line-height:1.15;\"\u003eA blinking LED indicates an unstable reading. A steady LED indicates a stable reading; use the printed scale beside it.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-radius:8px;padding:15px;margin:0 0 10px;background:#fff;line-height:1.15;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;line-height:1.15;\"\u003eWhat happens outside its measurement range?\u003c\/summary\u003e\u003cdiv style=\"padding-top:12px;line-height:1.15;\"\u003eThe bottom LED blinks for an under-range reading and the top LED blinks for an over-range reading. The EC measurement range is 0.2 to 6.0 mS\/cm.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-radius:8px;padding:15px;margin:0 0 10px;background:#fff;line-height:1.15;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;line-height:1.15;\"\u003eIs it waterproof and temperature compensated?\u003c\/summary\u003e\u003cdiv style=\"padding-top:12px;line-height:1.15;\"\u003eThe casing is IP67 rated and floats. Automatic temperature compensation covers 5 to 50 °C; the operating environment is 0 to 50 °C, with a maximum relative humidity of 95%.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-radius:8px;padding:15px;margin:0 0 10px;background:#fff;line-height:1.15;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;line-height:1.15;\"\u003eAre batteries included?\u003c\/summary\u003e\u003cdiv style=\"padding-top:12px;line-height:1.15;\"\u003eYes. Three 1.5 V AA batteries are supplied. Remove the protective battery film before first use. Typical battery life is about three years at ten measurements per day.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-radius:8px;padding:15px;margin:0 0 10px;background:#fff;line-height:1.15;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;line-height:1.15;\"\u003eShould I store the sensor wet?\u003c\/summary\u003e\u003cdiv style=\"padding-top:12px;line-height:1.15;\"\u003eNo. Rinse after use, follow the monthly electrode-cleaning procedure and store the EC45 dry and clean in its protective packaging.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Milwaukee Instruments","offers":[{"title":"Default Title","offer_id":53532119597354,"sku":"BTS-EC45","price":139.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/EC45-0.webp?v=1794422057","url":"https:\/\/bluetigerscientific.com\/products\/milwaukee-ec45-pro-ec-tds-cf-nutrient-stick-meter","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}