Model: Az8690 pH pen
Features:
-dual display temp. & pH with atc
-one touch for auto-calibration
-easy read by 45° Angle shape
-pH electrode replaceable
Model: Az8361 cond. & tds pen
Features:
Dual display temp. & cond or tds w/atc values.
Water proof membrane keypad.
Low cost design with high accuracy.
Quick response and easy to calibrate.
Adjustable tds factor from 0.4 to 1.0
Auto power off.
Hold current reading.
Model: Az8371 salinity pen
Features:
Dual display temp. & salinity with atc.
Water proof membrane keypad.
Low cost design with high accuracy.
Quick response and easy to calibrate.
Built-in nacl temp. Coefficient.
Built-in nacl cond. To tds conversion factor
Auto power off/non-sleep mode disable.
Wide applications.
Model: Az8303 handheld cond. /memory meter
Features:
Dual display conductivity and temp...
Automatic temperature compensation.
Manually temp. Compensation selectable.
Cell contant, normalization temp. Selectable.
99 points memory
Real time clock stampedwith each memory.
RS232 and irda output
Model: Az8401 handheld d. O. Meter
Features:
Accurate dissolved oxygen measurement.
RS232 interface.
Clark-type oxygen electrode
Audited Supplier 
Audited Supplier 
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