Ohaus ST10S Salinity Pen Meter, Waterproof auspowers_batchthree Great for carrying on long

Great for carrying on long distance trips to protect against drops or a bumpy road

Suitable for the following calculators: TI-30XA TI-30XIIS Casio FX-115ES Plus Casio FX-115ES Plus 2 Casio FX-300ES Plus Casio FX-300ES Plus 2 Casio FX-991ES Plus Casio FX-991ES Plus 2

Member of The Water Quality Association

very easy to handle

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Ohaus ST10S Salinity Pen Meter, Waterproof auspowers_batchthree Great for carrying on longOhaus ST10S Salinity Pen Meter, Waterproof 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 and time