Skip to product information
1 of 1

HM Digital

HM Digital COM-300L Pro Series pH/EC/TDS/Temp Meter

HM Digital COM-300L Pro Series pH/EC/TDS/Temp Meter

Regular price $159.65
Regular price Sale price $159.65
Sale Sold out

Due to the holidays, many fulfillment centers are working on limited hours for the remainder of the year and SOME SHIPMENTS MAY BE DELAYED. Thank you for your understanding. Happy Holidays!

Shipping Restrictions

We ship throughout the lower 48 states.

Bulk Orders

For Pricing on Multiple Units, Custom Freight Quotes & Commercial Discounts Contact Us

Request a Quote

To Request a Quote either use the Quote Request option at checkout (no payment information required) or Contact Us

View full details

The HM Digital COM-300L is a Professional Grade Waterproof pH/EC/TDS/Temp Combo Meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.

  • Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity, and Temperature
  • Five scales: pH, µS, mS, ppm 0.5 (NaCl) Scale & 0.7 (442™) Scale
  • Automatic Temperature Compensation (ATC) using three temperature coefficients
  • Waterproof housing (IP-67 rating)
  • Digital Calibration (push button) to any point within the meter’s range
  • Auto-off function, data-hold function, and low-battery indicator
  • Display: large and easy-to-read LCD screen includes simultaneous temperature reading
  • Replaceable Sensor (model SP-C3)
  • Factory Calibrated (pH/EC/TDS)
  • Includes translucent cap, 2 (AAA) alkaline batteries, pH 4 & 7 calibration solutions, pH storage solution, and lanyard