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KL**3(III)Waterproof Pen-type pH Meter *Large and easy-to-read LCD *Replaceable pH electrode *Waterproof design *Data hold Technical Specification: Measuring range:0.*0~*4.*0PH Accuracy:+/*0.1PH Resolution 0.*1PH Operating Temperature:0.C~*0.C Automatic Temperature Compensation:0.C~*0.C Power Supply:4×1.5V(AG*3) Dimensions:**8×*5×*5(mm3) KL**3(II) Waterproof Pen-type pH Meter Pocket sized and feather-weight for portable use in a large number of applications. It is utilize user-replaceable electrodes. Technical Specification: Range:0.*0~*4.*0pH Accuracy:±0.1PH Resolution:0.*1PH Operating temperature:0.C~*0.C Automatic Temperature Compensation:0.C~*0.C Plug:Fixed Electrode Extended Fixed Electrode BNC*1m cable BNC Power Supply:4×1.5V(AG*3) Dimensions:**5×*6×*6 mm **0mm×*6mm×*6mm Weight:*3g *5g *0g *8g