KETOTEK Digital PH Meter, PH Meter with ATC, Water PH Test Meter with 0.00-16.00ph Measure Range for Drinking Water, Hydroponics, Aquariums, Swimming Pools. High Accuracy 0.01 PH Pen Tester… auspowers_batchfour Calibration Certificate A calibration certificate

Calibration Certificate A calibration certificate with the calibration date and the expiration date is provided for each device

Front radio pockets with strap: You can put 2 walkie talkiesin side and strap will fix radio antenna so that it fits very tightly

3 Female Threads: 17

Similar CNC technology as Macbook adopts

KETOTEK Digital PH Meter, PH Meter with ATC, Water PH Test Meter with 0.00-16.00ph Measure Range for Drinking Water, Hydroponics, Aquariums, Swimming Pools. High Accuracy 0.01 PH Pen Tester… auspowers_batchfour Calibration Certificate A calibration certificateKETOTEK Digital PH Meter, PH Meter with ATC, Water PH Test Meter with 0. 00 16. 00ph Measure Range for Drinking Water, Hydroponics, Aquariums, Swimming Pools. High Accuracy 0. 01 PH Pen Tester Specifications: Measure range: 0. 00 16. 00PHResolution: 0. 01PHAccuracy: 0. 01 PHPower Supply: 21. 5V (LR44 Button cell) (Included)Operating Temperature: 0F 140FDimension: 155mm 31mm 18mm 6. 101. 220. 70Weight: 50g 1. 76ozFeatures: Automatic Temperature