ORP & pH Quality Tester - eucatech Store
ORP & pH Quality Tester - eucatech Store
ORP & pH Quality Tester - eucatech Store
ORP & pH Quality Tester - eucatech Store

AZ Instrument Corp.

ORP & pH Quality Tester

Sale priceR 7,302.40




The AZ 8651 ORP & pH Meter can measure the pH and oxidation-reduction potential value, which can be used in various water quality testing applications.

Highlighted Features

  • Integrated pH and ORP measurements in one
  • One-touch auto-calibration up to 5 points
  • Calibration values are adjustable
  • Dual display pH / mV & Temperature
  • Backlight display for use in a dark area
  • pH automatic buffer recognition to avoid errors during calibration
  • pH electrode status indication
  • Hold function to freeze the record
  • Max./Min review of memorized data
  • Easy to view probe calibration data.
  • The "Ready" icon on the LCD indicates whether the reading is stable or not
  • USB connection for online logging or uploading 99 memories to PC for analysis
  • Automatic or manual temperature compensation is allowed
  • Could be powered by an adaptor for long-time use
  • Auto power off to save battery power
  • Temperature unit ℃/°F is switchable
  • An excellent tool as the Oxidation-reduction potential (ORP) meter


The portable 8651 AZ pH and ORP Meter can measure the pH and oxidation-reduction potential value, which had been widely operated in Water Quality Testing applications.

The pH sensor electrode should connect to the BNC port on the top of the 8651 AZ pH and ORP Meter, and its temperature sensor could be inserted into the phone jack port next to BNC.

AZ Instrument Corp. provides the following different pH probes to operate with 8651 AZ pH and ORP Meter,

Model No. Description
VZ86P3AZ  ATC pH probe
VZ86P2AZ  pH probe without ATC function
VZ86P4AZ  pH probe for Low Ion Strength without ATC function
VZ86P6AZ  Full glass pH probe without ATC function
VZ86P7AZ  Sharp tip pH probe without ATC function
VZ86P1AZ  Flat surface pH probe without ATC function

The 8651 AZ pH and ORP Meter could be powered by 4pcs AAA batteries for carrying easily or a 9VDC adaptor for the long-time measuring plan with the tripod. The meter has a backlight function, which could let the user operate in a dark area.

The 8651 AZ pH and ORP Meter could link to the PC via USB cable to capture the online data, and display the pH, mV, oxidation-reduction potential (ORP), and temperature readings with real-time output. Users can retrieve files, save the data for operating data analysis, and record statistics....versatile functions according to different purposes.

The 8651 AZ pH and ORP Meter could be the best Water Quality tester for all professional measuring purposes, including the LAB, water treatment business, Aquaculture, Aquafarm, swimming pool, or other related industries.


Model 8651
pH Measuring Range 0.00~14.00
pH Accuracy ±0.02
pH Resolution 0.01
mV Measuring Range -1999~1999 mV
mV Accuracy ±0.2mV (-199.9~1999.9mV) or ±2mV (others)
mV Resolution ±0.1mV (-199.9~1999.9mV) or ±1mV (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 pH probe (86P3, 86P2, 86P4,  86P6, 86P7, 86P1)
ORP probe (850P, 86P5)
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