small size, easy to carry For easy detection of the natural minerals ceramics and their products and accurately calculate th

Sensors: GM tubeEffective Area: 15.5 cmTemperature range; measurement -10 ~ +50 When custody -20 ~ +60 Error range: ± 15%Display: 4 +1 / 2 digit digital liquid crystal displayPower: Alkaline Battery 4 on the 3rd (about can be used60 hours)Features: small size, easy to carry. For easy detection of the natural minerals, ceramics and their products and accurately calculate the number of its negative ions occur.Measurement: As the general environment there is the Central Standing Committee surge signal interference, affect the accuracy of the measurement results, we recommend the best way to measure the measurement ten times, delete whichever is the average maximum and minimum values and then

Japanese technology Ion tester