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Hanna Instruments HI9813‑61 pH/EC/TDS/Temperature Meter with CAL Check Portable Multiparameter Meter Hanna Instruments
Hanna Instruments HI9813‑61 pH/EC/TDS/Temperature Meter with CAL Check Portable Multiparameter Meter Hanna Instruments
Hanna Instruments HI9813‑61 pH/EC/TDS/Temperature Meter with CAL Check Portable Multiparameter Meter Hanna Instruments
Hanna Instruments HI9813‑61 pH/EC/TDS/Temperature Meter with CAL Check Portable Multiparameter Meter Hanna Instruments

Hanna Instruments HI9813‑61 pH/EC/TDS/Temperature Meter with CAL Check

$399.99

    The HI9813‑61 portable pH/EC/TDS/temperature meter delivers fast, reliable multiparameter measurements with CAL Check™ verification, making it a trusted all‑in‑one tool for hydroponics, greenhouses, agriculture, and water quality monitoring. Its intuitive interface, rugged design, and compatibility with the HI1285‑61 probe ensure accurate field and laboratory performance with minimal training required.

    • Measures pH, EC, TDS, and temperature using a single 3‑in‑1 probe

    • CAL Check™ alerts users to potential calibration issues for more dependable readings

    • Ideal for hydroponics, greenhouse nutrient management, farming, and groundwater testing

See All Specs

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Fast Delivery

Most items ship same day

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Manufacturer Warranty

All products are covered by manufacturer warranty

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After-Sale Support

24/7 support

What's Included

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VR Headset

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2 Touch Controllers

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Charging Cable

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Power Adapter

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Glasses Spacer

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The HI9813‑61 portable meter provides clear, reliable pH, EC, TDS, and temperature readings on a large, easy‑to‑read LCD designed for fast field and greenhouse measurements. Each parameter displays with practical resolution and accuracy, including ±0.1 pH and ±2% full‑scale EC/TDS performance. The meter supports automatic temperature compensation for EC and TDS, ensuring stable readings even with fluctuating environmental conditions. Manual single‑point calibration for both pH and EC/TDS keeps operation simple, while on‑screen prompts guide users through calibration and measurement steps. Paired with the HI1285‑61 amplified probe, the system minimizes electrical noise interference and delivers dependable results in agricultural, hydroponic, and greenhouse applications.

HI1285‑61 polypropylene body amplified pH electrode with built‑in EC/TDS and temperature sensors

The HI9813‑61 includes the HI1285‑61 multi‑sensor probe, combining pH, EC, TDS, and temperature measurement into a single durable polypropylene body. The integrated design connects to the meter through an 8‑pin DIN connector, ensuring secure communication and stable readings during field use.

Amplified pH electrode

The built‑in amplifier protects the pH signal from electrical noise, a common challenge in environments with pumps, motors, and lighting systems. This ensures more consistent pH measurements in greenhouses and hydroponic setups.

Amperometric EC/TDS sensor

The EC/TDS portion of the probe uses an amperometric sensor, applying an alternating voltage across stainless steel pins. Conductivity increases as dissolved salts rise, allowing accurate nutrient and water quality monitoring.

Polypropylene body

The rugged polypropylene housing protects all sensors in a single maintenance‑free design. The gel‑filled pH electrode eliminates the need for refilling, making the probe ideal for frequent field use.

  • 3 sensors integrated into one probe
  • Pre‑amplified pH electrode reduces electrical interference
  • Gel‑filled, maintenance‑free pH design
HI1285-61 Probe

Features at‑a‑glance

Waterproof

Automatic Temperature Compensation

  • All readings automatically adjust for temperature variations

EC to TDS conversion factor

  • Conversion factor automatically adjusts from 0.56 to 0.78 based on EC
  • Based on the 442 natural water curve

Low Battery Indicator

    SKU HI9813-61
    pH Range 0.0 to 14.0 pH
    pH Resolution 0.1 pH
    pH Accuracy @ 25°C / 77°F ±0.1 pH
    pH Calibration Manual, 1-point
    Temperature Range 0.0 to 70.0°C
    Temperature Resolution 0.1°C
    Temperature Accuracy @ 25°C / 77°F ±0.5°C
    Temperature Calibration Automatic from 0 to 70°C with ß=2% / °C
    EC Range 0 to 4000 µS/cm
    EC Resolution 0.01 mS/cm
    EC Accuracy @ 25°C / 77°F ±2% F.S.
    EC Calibration Manual, 1-point
    TDS Range 0 to 1999 ppm (mg/L)
    TDS Resolution 1 ppm
    TDS Accuracy @ 25°C / 77°F ±2% F.S. ppm
    TDS Conversion Factor Variable, automatically adjusted from 0.56 to 0.78 (442 curve)
    TDS Calibration Manual, 1-point
    Power Supply 1 × 9V alkaline battery / approx. 150 hours
    Environment 0 to 50°C (32 to 122°F), 100% RH
    Dimensions 145 × 80 × 36 mm (5.7 × 3.1 × 1.4 in.)
    Weight 230 g (8.1 oz.)
    Warranty 2 years
    Recommended Probe HI1285‑61 combination amplified pH/EC/TDS/temperature probe, 8‑pin DIN, 1 m cable

    Shipping, Return, and Warranty Policy

    At Blue Tiger Scientific, we are proud to distribute authentic Hanna Instruments products. The following policies apply to all purchases made through our store.

    Shipping Policy

    • All orders are shipped via FedEx from Hanna Instruments' fulfillment center in Smithfield, Rhode Island.
    • FedEx Ground is the standard method; expedited options (2-Day, Overnight) are available for an additional cost.
    • Hanna Instruments only ships to residential or business addresses within the United States (no PO Boxes).
    • Orders placed after business hours, weekends, or holidays will ship the next business day, pending product and carrier availability.
    • Shipping timelines may vary depending on product availability, order size, and carrier logistics.
    • Blue Tiger Scientific and Hanna Instruments are not responsible for carrier delays, weather-related disruptions, or other unforeseen delivery issues once the order has shipped.

    Return Policy

    • All return requests must be coordinated directly with Blue Tiger Scientific before a product is sent back.
    • Products must have a Return Merchandise Authorization (RMA) number issued by Blue Tiger Scientific before being returned.
    • Products must be returned in new or like-new condition, with the original packaging and proof of purchase (such as an invoice or packing slip).
      Customers are responsible for return shipping costs unless otherwise stated.
    • Unauthorized returns (without an RMA) will be refused and returned at the customer's expense.
      Returns are subject to inspection and approval. Products not in acceptable condition may be denied credit.
    • Some products, such as custom-built, special order, and hazardous materials, may not be eligible for return.

    Warranty Policy

    • Hanna Instruments' products are covered by their Limited Warranty against defects in materials and workmanship under normal use.
    • All warranty claims and services are handled directly by Hanna Instruments.
    • Warranty periods vary by product. If unspecified, the standard warranty term is 18 months from the Hanna Instruments factory ship date.
    • If you experience an issue believed to be covered under warranty, please contact Hanna Instruments for guidance on how to submit your warranty request to Hanna Instruments.
    • Customers must follow Hanna Instruments' warranty submission process, including providing a claim number, product model and serial number, and a detailed description of the issue.
    • Hanna Instruments will determine whether products are repaired, replaced, or otherwise serviced under warranty.
    • Note: Warranty coverage does not apply to damage caused by misuse, accidents, unauthorized repairs, or improper storage and handling.

    Important Notes

    • Some Hanna Instruments products are custom-made or built to order. Shipping will occur once the product is ready.
    • In the event of backorders, you may request partial shipments.
    • Delays beyond our control (e.g., material shortages, import delays, or carrier issues) may occasionally occur.
    HI9813‑61 pH/EC/TDS/Temperature Meter Manual
    Download
    Manual

Product Resources:

Copy of Technical Specifications

FeatureDetails
Viewing Head Siedentopf type trinocular head, inclined at 30°, Interpupillary adjustment 53mm to 75mm, graduated diopter on left eyetube (30mm I.D. eyetubes)
Eyepieces SWH10X Widefield high eyepoint eyepiece, Field No. 22, tube O.D. 30.0 mm
Nosepiece Quintuple
Quintuple LWD Planachromat Phase 10x, 20x
Condenser TC Condenser N.A. 0.30, W.D. 73.0mm
Stage180mm(X) x 245mm(Y) plain stage with replaceable glass insert with 45mm opening, Glass Stage plate insert
IlluminationKoehler without iris, with phase slider, 3W LED
WarrantyLIMITED LIFETIME WARRANTY

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