Description

waterproof PH pen 1.High-accuracy:±0.*1 pH ***** easy to use 3.PH pen Range: 0.0 to *4.0 pH 4. PH pen Resolution:0.1 Ph 5 PH pen Temperature Compensation Automatic:0 to *0°C *****-saving province electricity type ***** EMC Deviation:±0.1 pH *****: Manual, 1 point, 9. PH pen Environment:0 to *0°C (*2 to **2°F); ***** max *5% *1.Battery Type:4 x 1.5V alkaline *2.Battery Life :approx. **0 hours of use *3.Dimensions:**2 x *0 x *1 mm (5.9 x 1.2 x 0.8\") *4.Weight:*3 g *5. PH PEN CALIBRATION � Immerse the tester up to the maximum immersion level in pH 6.*6 buffer solution � Allow the reading to stabilize and using a small screwdriver adjust the calibration trimmer to read 6.9. Calibration is now complete. *6. Remove the protective cap. Do not be alarmed if white crystals