This KL-009(I) Pocket-size Pen Type PH Value Measurement and Control Instrument is a useful tool to measure PH value. Designed with mini pocket size， it is quite convenient to carry. It’s a multifunctional， intelligent instrument， which can store， calculation and compensation-related PH value of all the parameters measured. It is a great device in rendering a qualitative range of pH meter， which is offered to the clients at competitive price. The pen-type ph meter is highly appreciated by construction engineers， professionals， students， researchers， govt. agencies etc. It is simple to use， less time consuming， accurate and suits your application.                                    Features            Small， portable， ready to measure， easier to useAutomatic/manual temperature compensation.It’s a multifunctional， intelligent instrumentCan store， calculation and compensation-related PH value of all the parameters measuredThe clear display， simple operation and accurate test performance make it has excellent value for money                                                             Specifications            Range    0.0~14.0pH    <br>Resolution    0.1 pH    <br>Accuracy    ±0.1 pH(at 20℃)    <br>Typikal EMC DEV    ±0.2 pH    <br>Batteries    3 x 1.5V(AG-13 Button Battery)    <br>Life    approx. 700 hours of use    <br>Environment    0~50℃    <br>Relative Humidity    ＜95%    <br>Dimensions    5.91 x 1.14 x 0.79" / 15 x 2.9 x 2cm    <br>Weight    4.48 oz / 127 g     <br>                                                            Package Includes            1 x Screwdriver1 x Pen Type pH Meter1 x Manual1 x pH Substances(Potassium Hydrogen Phthalate)1 x pH Substances( Mixed Phosphate)