Established in 1987, HM Digital is an original equipment manufacturer that has been recognized worldwide for providing the best values in water testing instrumentation, especially the increasingly popular TDS meter.

Our products are co-designed US office and Head office in South 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.

In 2015, the India office was established in New Delhi to provide marketing, customer service and distribution for all of India. In 2018, an Indian factory was established in Rajasthan to directly produce and supply high-quality products from India.

Our handheld meters, in-line monitors, controllers, sensors and calibrations solutions are used in a myriad of applications. They are superior in quality, features and performance, yet are made available at an economical cost.

We strive to always provide the best values as well as the utmost care in promptly serving our distributors and customers.
With HM Digital instruments, you can find the right solution for your application.