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HM Digital TDS-EZ Meter/Tester, Water/ppm/Purity/Filter

List Price: $47.50

Features: Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries Display: large and easy-to-read LCD screen Hold Function: saves measurements for convenient reading and recording 2 YEAR WARRANTY

Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Fun, translucent blue housing that's very strong and durable. Includes a TDS chart sticker on the back of the meter that explains TDS values. Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. Read more...

HM Digital HMDPH200 Waterproof PH and Temperature Meter

List Price: $144.99 Price: $79.94 You Save: $65.05 (45%)

Features: Meter Auto ranging 3 point calibration with digital fine tuning Measures pH and temperature Simultaneous temperature display

Hydrofarm hmdph200 waterproof ph and temperature meter Read more...

Hanna Instruments HI 98103B Beer pH Tester with Replaceable Electrode

List Price: $39.00 Price: $39.00

Features: Included 1.5V batteries provide approximately 3000 hours of continuous use Large LCD screen for readability Replaceable electrode to prolong life of meter Manual two-point calibration

The Hanna Instruments HI 98103B is a portable pH meter which provides a cost effective alternative to litmus paper.

Featuring a large LCD screen, the tester provides pH readings from 0.00 to 14.00 pH (+ or - 0.2), with a resolution of 0.01 pH. The tester electrode can be replaced by unscrewing the original from the meter body, and replacing with a new HI 1270 electrode. To use the meter, simply follow the included instructions which detail the initial conditioning of the electrode, the manual two-point calibration process, and how to properly store.

The HI 98103B operates from 0 to 50 degrees C (32 to 122 degrees F) with max RH 95%. Two 1.5V batteries are included, and provide approximately 3000 hours of continuous use. Buffer solutions (4.01, 7.01 and 10.01 pH), storage solution (HI 70300M), and replacement electrodes (HI 1270) must be purchased separately. The meter measures 66 x 50 x 25 mm (2.6 x 2.0 x 1.0"), and weighs 50g (1.8 oz.).

pH testers measure the acidity or alkalinity of a substance and are commonly used by researchers, manufacturers, and hobbyists.

Hanna Instruments manufactures a wide variety of analytical instrumentation, including pH meters, multi-parameter meters, electrodes, chemical reagents, and buffer solutions. Founded in 1978, Hanna is headquartered in Woonsocket, RI, with subsidiaries in 32 countries. Hanna Instruments holds many firsts in the field of analytical instrumentation, including a pH electrode with a built-in temperature sensor, an electronic pocket-sized pH tester, and a replaceable electrode pH pocket tester. To ensure the quality of its products, Hanna is a vertically integrated manufacturer and does not subcontract any part of its manufacturing.

What’s in the Box?

• HI 1270 pH electrode
• Two 1.5V batteries
• Instructions

Hydrofarm MGMP1 Active Air 2-Way pH & Moisture Meter

List Price: $9.99 Price: $9.72 You Save: $0.27 (3%)

Features: No batteries required Good for use indoors or outdoors Provides accurate pH values from 4-8 Sturdy and easy to use

Gardeners can conveniently test their moisture, and pH levels with the handy ActiveAir 2-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist), and pH readings between pH 0 (acidic) and pH 10 (basic) are represented. The durable, easy-to-read tester is suitable for indoors or out and needs no batteries to operate. Read more...