ORP/Redox-500mL 240mV Hardness Tester The ToxiRAE Pro LEL is

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

providing cost-effective monitoring and chemical identification

Very easy to use - even by non-technical personnel

The PVC Double Valve Pump operates up to 100 ft

HI 991300 measures low range conductivity and TDS

ORP/Redox-500mL 240mV Hardness Tester The ToxiRAE Pro LEL isHI7021L 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.