Precision
Precision display of 100 ppm over the scale of 0 to 10,000 ppm.

One-Touch Calibration
On activation, the tester calibrates the end-point automatically at prescribed standard solution.

Auto-End Point
The tester automaticlly senses a stable end-point reading and freezes it for recording.

Hold Function
Able to freeze display for ease of reading and recording.

Beep Function
The tester beeps at every press of the button and beeps on every completed function and end-point reading.