ORP/Redox-500mL 240mV Hardness Tester Pairing the ProQuatro with the

Pairing the ProQuatro with the 4-port cable creates an extremely powerful handheld multiparameter water quality instrument

Very easy to use - even by non-technical personnel

The ToxiRAE Pro LEL is the world's first wireless personal combustible gas monitor

HI 991300 measures low range conductivity and TDS

Each crawler ships with one set of small wheels

ORP/Redox-500mL 240mV Hardness Tester Pairing the ProQuatro with theHI7021L is a quality ORP test solution made from reagent grade chemicals and used to test platinum and gold ORP electrodes. Hanna test solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper proof seal to ensure the quality of the solution.