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HM Digital, Inc.

HM Digital COM-80 EC/TDS Hydrotester



4376

The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics.


HM Digital PH-80 Water Resistant pH Meter



4379

The HM Digital PH-80 pH Meter is an economically priced, reliable pH meter that is ideal for testing in hydroponic and aquaculture applications


HM Digital TDS-4TM Pocket TDS Temp Meter



4377

The HM Digital TDS-4TM Pocket Size TDS & Temp Meter is ideal for fresh water aquariums, swimming pools, spas, and hydroponics.


HM Digital TDS-EZ Consumer TDS Meter



4378

The HM Digital TDS-EZ Consumer TDS Meter is Ideal for all basic water testing applications. The best value meter in the world!