Specification :

Specifications
sension1 Portable pH Meter: Specifications Range:
pH: -2.00 to 19.99
mV: ± 2000
Temperature: -10 to 110 ° C ( -50 to 230 ° F)

Resolution:
pH: 0.1; 0.01; 0.001 ( selectable)
mV: 0.1 mV
Temperature: 0.1 ° C

Accuracy:
pH: ± 0.002
mV: ± 0.2 mV or ± 0.1% of reading ( whichever is greater)
Temperature: ± 1.0 ° C
Output None Inputs: ( 1) BNC; ( 1) 5-pin connector; ( 1) 2mm single-pin reference connector

Power Requirements: 4 alkaline AA batteries
Input Impedance: > 1012 ohms
Buffer Recognition: Auto; 4.01, 6.86, 7.00, 10.01
Display: Custom LCD
Calibration Points: 2-point calibration
Calibration Review: User-activated; shows last calibration slope, buffers/ standards used and mV in each
Battery Life: 6 months typical use ( approx. 500 hrs. continuous)
Low Battery Indicator: Yes
Dimensions 21.2 x 8.7 x 4.2 cm ( 8.35 x 3.43 x 1.65" )