Keep the pH probe hydrated when not in continuous use

Protective Design: Shields delicate electrode tips from physical damage

5% full-scale accuracy

ensuring your water stays clean and free from plastic-related contaminants

Max PSI: 100

Milwaukee MW401 PRO TDS Meter Bundle | 0-1990 ppm with Case & ATC 810666006830 Keep the pH probe hydratedDESCRIPTION MW401 is a Portable Low Range Total Dissolved Solids (TDS) Meter with Automatic Temperature Compensation. This instrument has been designed for aquariums, aquaculture, labs, and water conditioning applications to meet the needs for equipment suited from hobbist to professional. It is also a great meter for food labs, and water treatment applications. TDS testing provides a method to optimize chemical applications and minimize operational