... Cyanide, Fluoride, Fluoroborate, Idodide, Lead, Nitrate, Silver/Sulfide, Sodium Models and SpecificationsModelRIB1000pH Range0.00-14.00pHpH Resolution0.01 pHpH ... -45°CDisplayMeter sleeps (Benchtop) or shuts off (Portable) automatically 15 minutes after last key is pressedInputBNC,φ ... 240V (Bench top)4X1.5V“AAA”alkaline battery (Portable) Portable pH/ORP Meter Selection Guide limited space, contact ...