HM Digital’s HMD Line

New line of low cost, high quality meters.

HM Digital is pleased to release it’s new line of low cost, high quality instruments, beginning with it’s ZT-2 handheld TDS meter and QC-1 inline Quick Check Monitor.

This new line will feature HM Digital’s new “HMD” logo.

By incorporatiing new technology with a streamlined manufacturing process, HM Digital is able to provide affordable water testing instruments to the public. More information about the ZT-2 and QC-1 can be found on these web pages:


HM Digital, Inc. is a leading manufacturer of water testing instruments, including handheld testers, inline monitors and controllers for Total Dissolved Solids (TDS), Electrical Conductivity (EC), pH, temperature, ORP and other parameters.

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