ST Series PH Pen Meter

Product Manual Precision is now available in a line of portable electrochemistry products that provide accurate measurement of pH, ORP, conductivity, TDS and salinity. ST series pen meters are the economical option when you are simply looking for meters that are easy to use and provide accurate measurements. Water Proof Pen Meters ST20 Cond. range 0.00 – 14.00 pH Resolution 0.01pH Accuracy ± 0.05 pH Battery 4 x 1.5V Dimension 185 x 42 x 37mm Weight 105g Auto-off After 6 min no operation Ambient temperature 0~50 °C (32-122°F) Materials ABS   First UsageCondition the pH electrodes by immersing it in pH electrode protection solution for 1 hour before using. If the pH electrode protection cap is dry (may cause white crystals), add storage solution in the cap and soak the pH electrode for 1 hour. AccuracyST20 is 0.01pH resolution and 0.05pH accuracy pen meter. Each ST20 pen meter is factory calibrated. You may need to calibrate the ST20 regularly to ensure a