... Self-diagnostic for easy trouble-shooting Precision pH/ION Meter This precision pH/ION meter is used to measure acidity ... sent to computer via USB linkISE Options: Ammonia, Bromide, Calcium, Chloride, Cupric, Cyanide, Fluoride, Fluoroborate, Idodide, Lead, Nitrate, Silver/ ... Bench top)4X1.5V“AAA”alkaline battery (Portable) Portable pH/ORP Meter Selection Guide limited space, contact us for details ...