Product Line

pH & ORP
8551 AZ Handheld Oxidation Reduction Potential ORP Meter

8551 AZ Oxidation Reduction Potential mV Meter features:
* One touch auto-calibration up to 5 points
* Calibration values are adjustable
* Hold function to freeze the record
* Max./Min review of memorized data
* Easy to view probe calibration data.
* "Ready" icon on LCD to indicate the reading is stable or not
* USB connection for online logging or upload 99 memories to PC for analysis
* Could be powered by adaptor for long time use
* Auto power off to save battery power
* Temperature unit ℃/°F is switchable


Application of 8551 AZ ORP Detector:
The portable 8551 AZ ORP Meter can measure the oxidation reduction potential value from -1999mV to +1999mV, which had been widely operation in the Water Quality Testing applications.

The 8551 AZ ORP Meter could be powered by 4pcs AAA batteries for carry easily or 9VDC adaptor for the long time measuring plan with the tripod.

The 8551 AZ ORP mV Meter could link to PC via USB cable to capture the on-line data, and display the mV, oxidation reduction potential (ORP) and temperature readings with real-time output. User can retrieve file, save the data for operating data analysis, record statistics....versatile functions according different purposes.

The 8551 AZ ORP Meter could be the best Water Quality tester for all professional measuring purposes, including the LAB, water treatment business, Aquaculture, Aqua farm, swimming pool or other related industry.

The 8551 AZ ORP Meter was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.

§ Related Product Suggestions §
Other Handheld Water pH & ORP Meters, data loggers, printer
Benchtop Water Testing Meters (printer)
Handheld pH/Conductivity/TDS/Salinity/DO Combo Meters
Pen Type pH Meters


Specification of 8551 AZ ORP mV Meter:

Model 8551
mV Measuring Range -1999~1999 mV
mV Accuracy ±0.2 mV (-199.9~1999.9 mV) or ±2 mV (others)
mV Resolution ±0.1 mV (-199.9~1999.9 mV) or ±1 mV (others)
Temperature Measuring Range 0~60.0℃
Temperature Accuracy ±0.3℃
Temperature Resolution 0.1℃
pH Calibration Up to 5 points
99 points memory YES
Real Time Clock YES
Compatible Probe ORP: 850PAZ, 86P5AZ
LCD Size 44(L) * 26(W) mm
Operating Temperature 0~50℃
Operating RH% Humidity <80%
Storage Temperature -10~50℃
Storage RH% Humidity <90%
Sensor Life Time >6 months (with good maintenance)
Meter Size 175(L) * 70(W) * 33(H) mm
Weight ~150g
Battery AAA *4 PCS
Standard Package Meter, Batteries, Manual, Carry Case, Calibration Solution
Optional Accessory USB Cable & Software
Welcome to download and check the specification, operation manual and CE certificate of 8551 AZ ORP mV Meter from the following website linkage.

Relevant Products Information