This is the instrument that replaces your optical refractometer and doesn't go back in the drawer

First use: Prime filter by discarding first bottle to activate pH enhancement

Direct OEM replacement — engineered specifically for the HM Digital HM-200 TDS/EC meter

was great"

Laboratory & Research

Seychelle Compact Water Filter Camping Pump - RAD/pH 9.5 aquarium dosing This is the instrument thatIdeal for various activities, including camping, traveling, personal emergency preparedness, natural disasters or radiological contamination. Convenient and compact size Dual filtration (includes pre filter) Exclusive Ionic Adsorption Micro Filtration System Non BPA Leaching Plastics Tested to NSF ANSI Standard 42 & 53 by Broward Testing Laboratory Filters made in the USA and tested both Nationally and Internationally Increases alkalinity pH up to 9.