ORP/Redox-500mL 240mV Hardness Tester This highly reliable and compact

This highly reliable and compact Diver measures groundwater levels with a typical accuracy of ±0

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

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

The crawlers can operate fully submersed and are water resistant to depths of up to 100m (330')

strong polyurethane wheels

ORP/Redox-500mL 240mV Hardness Tester This highly reliable and compactHI7021L 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.