Water Analysis Pen Meters

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Versatile and Portable Water Analysis Products for Wherever Your Work Takes You

Accurate Results Anywhere and Anytime You Need Them

After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in a line of pen meters that 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.


Click on the product code for specifications and manual

Code Name Measurement Range Resolution Price  
ST10 Pen Meter ST10 0.0-14.0 0.1pH $59.40
ST20 Pen Meter ST20 0.00-14.00 0.01pH $105.60
ST10C-A Pen Meter ST10C-A 0.0-199.9 μs|cm 0.1 μs|cm $79.20
ST10C-B Pen Meter ST10C-B 0-1999 μs|cm 1 μs|cm $79.20
ST10C-C Pen Meter ST10C-C 0.00-19.99 μs|cm 10 μs|cm $79.20
ST20C-A Pen Meter ST20C-A 0.0-199.9 μs|cm 0.1 μs|cm $112.20
ST20C-B Pen Meter ST20C-B 0-1999 μs|cm 1 μs|cm $112.20
ST20C-C Pen Meter ST20C-C 0.00-19.99 μs|cm 10 μs|cm $112.20
ST10T-A Pen Meter ST10T-A 0.0-100.0 mg|L 0.1 mg|L $89.10
ST10T-B Pen Meter ST10T-B 0-1000 mg|L 1 mg|L $89.10
ST20T-A Pen Meter ST20T-A 0.0-100.0 mg|L 0.1 mg|L $112.20
ST20T-B Pen Meter ST20T-B 0-1000 mg|L 1 mg|L $112.20
ST10S Pen Meter ST10S 0.0-10.0 ppt 0.1 ppt $77.00
ST20S Pen Meter ST20S 0.0-80.0 ppt 0.1 ppt $112.20
ST10R Pen Meter ST10R -1000mV-1000mV 1mV $129.80
ST20R Pen Meter ST20R -1000mV-1000mV 1mV $169.40