Features
•Convenient pH Testing
-Two models with varying resolution and accuracy; the ST10 and ST20 offer a convenient way to measure pH, or the relative acidity or alkalinity of a sample at a given temperature. The pH pen meters can be operated with just one hand, freeing up your other hand to handle samples.

Specifications

Model	ST20	ST10
Range	0.00-14.00	0.0-14.0
Resolution	0.01pH	0.1pH
Accuracy	0.05pH	0.1pH
Temperature Range	0.0 - 99.0°C	NA
Temperature Compensation	Yes	NA
Display	Dual	Single
Calibration	3 point	N/A
Buffer Group	4.01,7.00,10.01	N/A
Automatic shutdown	6 minutes of Non-use	6 minutes of Non-Use
Batteries	4 AG13 1.5V Micro Alkaline	4 AG13 1.5V Micro Alkaline
Size/Weight	185x45x38mm, 110 g	185x45x38mm 110 g