Ohaus ST10T-B TDS Pen Meter, Waterproof, 0-1000 mg/L auspowers_batchfive or as an external power

or as an external power using the AC-to-DC adapter and battery

Tablet(Blue)

it will make your party decor pop

commonly referred to as "AMPS" plate

Widely Application : Great for Motor Control Switch

Ohaus ST10T-B TDS Pen Meter, Waterproof, 0-1000 mg/L auspowers_batchfive or as an external powerOhaus ST10T B TDS Pen Meter, Waterproof, 0 1000 mg L Ohaus pen meters provide accurate measurement of pH, oxidation reduction potential (ORP), conductivity, salinity and total dissolved solids (TDS). Starter pen meters are the economical option when you are simply looking for meters that will provide accurate measurement with no restriction. Each meter offers simple operation in a slim & portable design providing fast, straight forward results time