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PH-200 HM Digital Water Test Meter

Price $74.99 List Price Price $106.99 Save 29%
Availability: Discontinued - Free Shipping
  • Measures pH with extreme accuracy
  • No-tool digital calibration for ultimate ease of use
  • Waterproof flotation housing keeps your pH meter safe
  • 5 minute auto shut-off to conserve battery life
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The PH-200 HM Digital Water Test Meter is ideal for any owner of an aquarium, reverse osmosis sysyem, or water ionizer. With an accuracy of +/- 0.02 pH, and with automatic temperature compensation, you will know the exact condition of your water. Built to ISO-9001 standards, this durable unit is waterproof and floats in water. With a fully replaceable sensor, you may never need another pH meter. Order today!
Package Qty1
Used In BrandsHM Digital
Manufacturer's IdPH-200
Actual Size (in)7 3/10 inches (height) x 1 3/10 inches (width) x 1 3/10 inches (depth)
Actual Size (cm)18.542 x 3.302 x 3.302
Operating Temperature (°F)32 - 176
Operating Temperature (°C)0 - 80
Power Requirements3 x 1.5V Button Cell Batteries (included)
Warranty Guarantee1-Year Limited Warranty
Additional InformationProbe: Replaceable glass sensor and reference tube electrodes, Calibration: Digital automatic calibration with digital fine tuning, Housing: IP-67 Waterproof, Resolution: 0.01 pH, Accuracy: +/- 0.02 pH

Reduced Contaminants

The HM-DIGITAL-PH-200 is comparable with the following part numbers


User Guide


  1. Always make sure your sensor is kept in an electrode storage solution. If dry, refill the cap with the OP-STOR storage solution
  2. Remove the cap. Press the ON/OFF button
  3. Dip the meter into the water sample, liquid or solution to be tested. Lightly swirl the meter to ensure the removal of trapped air bubbles or electric charges. Do not tap it against the glass
  4. The meter will display a reading almost immediately. Keep the meter in the liquid until the reading stabilizes (approx. 30 seconds) for an accurate reading
  5. NOTE: It is normal for a pH reading to fluctuate and not fully stabilize
  6. Press the HOLD/MODE button while the meter is still in the liquid to keep the current reading to the display. Pressing again will allow the display to change again
  7. The temperature reading is always displayed on the LCD panel during measurement mode, and is shown simultaneously for pH readings. It is not shown when the meter is in calibration mode
  8. The default temperature reading for the meter is in Celsius. To change the temp mode, quickly press the TEMP/CAL button
  9. Dip the meter into the water sample or solution to be measured. The temperature reading will change immediately (unless the solution is at room temp). For very hot or cold liquids, the reading may take slightly longer to stabilize
  10. Press the ON/OFF button to turn the meter off. Shake any excess water off the meter and rinse with distilled or de-ionized water. Put the cap back on