HM Digital Meters

Established in 1987, HM Digital, Inc. (formerly known as Heemang Manufacturing) is an original equipment manufacturer (OEM) that has been recognized worldwide for providing the best values in water testing instrumentation, especially the increasingly popular TDS meter.

TDS-3 Handheld Meter With Carrying Case

Ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver. Perfect for both, consumer or commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology, Hold Function: saves measurements for convenient reading and recording. Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 0 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. Built-in digital thermometer. 3 year warranty

	Item Description Retail HMTDS3 TDS-3 Handheld Meter With Carrying Case $39.95 HMBAT 4-pack 1.5 V batteries for HM Digital Meters $6.95

COM-100: Waterproof EC / TDS / Temp Combo Meter

Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, testing, boilers & cooling towers, water treatment and more. Measures electrical conductivity (EC), total dissolved solids (TDS) and temperature. Three different calibration options (KCl, 442^TM, NaCl), each with its own non-linear conversion factor. Automatic Temperature Compensation (ATC) using three temperature coefficients Waterproof housing Measurement Range: 0-9990 µS; 0-8560 ppm (auto-ranging). Digital Calibration (push button) Auto-off function, data-hold function and low-battery indicator. Display: large and easy-to-read LCD screen includes simultaneous temperature reading. Factory Calibrated: The COM-100 meter is calibrated with a 1413 µS solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver.

1 year warranty

	Item Description Retail HMC100 COM-100: Waterproof EC / TDS / Temp Combo Meter $74.95 HMBAT 4-pack 1.5 V batteries for HM Digital Meters $6.95

PH-200: Waterproof pH Meter

Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, water treatment, agriculture and more. Measures pH and Temperature Auto-ranging three point calibration with digital fine tuning Includes 4 pH buffer solution in a sponge embedded in a clear cap Waterproof housing Simultaneous temperature display Measurement Range: 0-14 pH. Digital automatic calibration (one point), with digital fine tuning .Auto-off function, data-hold function and low-battery indicator. Display: large and easy-to-read LCD screen includes simultaneous temperature reading .Factory calabrated The PH-200 meter is three-point factory calibrated to 4, 7, and 10 pH. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. Includes a cap, batteries, lanyard, and pH 7.0 buffer.

Specifications:

pH Range: 0 - 14
Temperature Range: 0-80 °C; 32-176 °F
Resolution: 0.01 pH; Temperature resolution is 0.1 °C/F
Accuracy: +/- 0.02 pH
Calibration: Digital automatic calibration (one point) with digital fine tuning
Electrode: Replaceable glass sensor and reference tube electrodes
Housing: Waterproof (submersible; floats)
Power source: 3 x 1.5V button cell batteries (included)
Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)
Weight: 96.4 g (3.4 oz)

1 year warranty

	Item Description Retail PH200 PH-200: Waterproof pH Meter $99.00 HMBAT 4-pack 1.5 V batteries for HM Digital Meters $6.95