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HM Digital Meters

Established in 1987, HM Digital, Inc. (formerly known as Heemang Electronics) 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. Their products are co-designed between their Los Angeles office and their ISO-9001-certified factory in Seoul, Korea, producing high quality water testing and monitoring equipment for all types of water treatment and purification systems, including reverse osmosis (RO), that are sold in over 50 countries throughout the world. They also offer OEM services for customized products and private labeling.

Handheld Water Total Dissolved Solids Tester - AP-1 ss_pt1917813
Product Features
  • Power Source: 1 x 3V CR2032 button cell (included)
  • TDS Range: 0-5000 ppm (mg/L).
  • Temperature Range: 0-80 C; 32-176 F
  • Resolution: 1 ppm
  • Temperature Resolution: 0.1 degrees C/F (Accuracy: +/- 2%)

Handheld Water Total Dissolved Solids Tester - AP-1

by HM Digital Meters

$25.79 $43.10

Waterproof PH / Temperature Meter ss_pt1917813
Product Features
  • Includes 4 pH buffer solution in a sponge embedded in a clear cap, so you can see if it is dried up
  • Includes a cap, batteries, and lanyard
  • Large and easy-to-read LCD screen includes simultaneous temperature reading

Waterproof PH / Temperature Meter

by HM Digital Meters

$171.67
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COM-100 Waterproof Combo Meter for EC, TDS and Temperature ss_pt1917813
Product Features
  • Power source: 3 x 1.5V button cell batteries (included) (model 357A).
  • Combo meter
  • Electrical Conductivity Range: 0 - 9990 ?S; 0 - 9.99 mS.

COM-100 Waterproof Combo Meter for EC, TDS and Temperature

by HM Digital Meters

$59.95 $94.95
Free Shipping
DM-2 Commercial In-Line Dual TDS Monitor ss_pt1917813
Product Features
  • Power source: 2 x AA batteries (included)
  • TDS monitor
  • Range: 0-9990 ppmAccuracy: ?2%
  • Conversion Factor: NaCl (avg. 0.5)
  • Calibration: NaCl 342 ppm factory calibrated. Re-calibration can be done separately for each line or simultaneously for both.

DM-2 Commercial In-Line Dual TDS Monitor

by HM Digital Meters

$52.08 $73.28
Free Shipping
SM-1 In-Line TDS Monitor for Single Water Line ss_pt1917813
Product Features
  • Power Source: 2 x 1.5V button cell batteries (included)
  • Range: 0-9990 ppm
  • Accuracy: +/- 2%.
  • Conversion Factor: NaCl (avg. 0.5)

SM-1 In-Line TDS Monitor for Single Water Line

by HM Digital Meters

$23.92 $48.99

AquaPro TDS / Temperature Meter ss_pt1917813
Product Features
  • Large and easy-to-read LCD screen includes simultaneous temperature reading
  • Includes a cap and batteries
  • Temperature meter
  • Measures total dissolved solids (TDS) and temperature

AquaPro TDS / Temperature Meter

by HM Digital Meters

$26.56 $42.95

ZT-2 TDS Meter ss_pt1917813
Product Features
  • Power source: 2 x 1.5V button cell batteries (included)(357A)
  • TDS meter
  • Range: 0 - 999 ppm (mg/L)
  • Resolution: 1 ppm (0-999 ppm)

ZT-2 TDS Meter

by HM Digital Meters

$14.08 $42.95
Out of Stock
  (2)
SP-1 TDS / EC Sensor Probe for Panel Mounted Controllers ss_pt1917813
Product Features
  • Connector: 4 pin
  • Sensor Material: Stainless steel
  • Pin: Yes
  • Probes: 1/2'' threaded bushing (detachable from cable)

SP-1 TDS / EC Sensor Probe for Panel Mounted Controllers

by HM Digital Meters

$86.95 $99.74
Out of Stock
SP-4 Dual TDS Sensor Probes (Single 4-pin Connector) ss_pt1917813
Product Features
  • Connector: Single 4-pin (each sensor has only two wires)
  • Thermometer pins: No
  • Stainless steel sensors, Probe: 1/4'', Cable: 24.5''

SP-4 Dual TDS Sensor Probes (Single 4-pin Connector)

by HM Digital Meters

$12.27 $39.10
Out of Stock

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