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MP522

Precision pH/Conductivity Meter

Features

Suitable for scientific research, quality control, biotechnology, fine chemicals, precision areas such as acid-base titration pH and conductivity measurements.

Meter meets with the requirement of international GLP standards. Its features up to automatic calibration, automatic temperature compensation, data storage, timing measurement, clock display, RS-232 output, function setting and self-diagnose etc.
 
There are three different measurement modes: stable display mode; time measurement mode; continuous measurement mode.
 
Automatically recognize 13 kinds of pH buffer solution. User can choose anyone from four series of standard buffer solutions: Europe & USA series, NIST series, CHINA series and Self-defined series.
 
High purified water and ammonia added purified water pH measuring mode can be set up, especially suitable for electric power and petrochemical industry.
 
With EH redox potential measuring mode can directly display ORP value which against standard potential of hydrogen electrode.
 
Automatically recognize 8 kinds of conductivity standard solution. User can choose anyone from two series of solutions: Europe & USA series and China series.
 
Adopt advanced and original conductivity measurement technology, use 1 pc of conductivity electrode (K=1), it can meet measuring accuracy requirement for range within 0.5μS/cm ~ 200mS/cm by using only one-point calibration.
 
Automatically select conductivity measurement range, when measuring high pure water, equipment automatically enter into temperature compensation of nonlinear model, especially for electricity, microelectronics and the pharmaceutical industry requirements.
 
Meter has the only product serial number.
 
Dustproof and waterproof meter meets IP54 standards. All sockets are seal protected by the silica gel caps.
 

Specifications

pH Measuring range （-1.999 ~ 19.999）pH
Resolution 0.1/0.01/0.001 pH
Accuracy Meter:±0.002 pH, connect meter with electrode:±0.01pH
Input current ≤1×10-12 A
Input impendance ≥3×1012 Ω
Stability ±0.002 pH/3h
Temp. compensation range (0 to 100) ℃（automatic or manual）
mV Measuring range(mV/ORP/EH) -1999.9mV ~ 0 ~ 1999.9mV
Resolution 0.1mV
Accuracy ±0.03% FS
Conductivity Measuring range Conductivity：（0.00~20.00）μS/cm （20.0~200.0）μS/cm
（200~2000）μS/cm  （2.00~20.00）mS/cm
（20.0~200.0）mS/cm （200~2000）mS/cm（K=10）
Resistivity：（0 ~ 100）MΩ·cm
TDS:  （0 ~ 100）g/L
Salinity： （0 ~ 100）ppt
Resolution 0.01/0.1/1μS/cm  0.01/0.1/1 mS/cm
Accuracy Meter:±0.5% FS,connect meter with electrode:±0.80% FS
Temp. compensation range （0 ~ 50）℃（automatic ）
Electrode constant 0.1 / 0.5 / 1 / 5 / 10 / 50 / 100  cm-1
Reference temperature 25℃、20℃ and 18℃
Temperature Measuring range -10℃~ 110℃
Resolution 0.1℃
Accuracy 5~ 60℃range：±0.4℃  other range：±0.8℃

Other Technical 

Parameters:

 Data storage 300 groups
Storage content

Measuring value series number, measuring value, temperature, 

ATC or MTC state, measuring date and time
  DC9V/300mA
Power RS232
Communication connector 160 × 190 × 70mm/880g
Size and weight ISO9001:2008, CE and CMC
Quality and safety certification  
Working Condition Environment temperature 5 ~ 35 ℃（0.01grade） 15 ~ 30 ℃（0.001grade）
Environmental humidity ≤75%
IP rating IP54 Dustproof and waterproof

 

Standard Kit Includes

1. Model MP522 Precision pH/Conductivity meter 1set
2. Model 602 flexible electrode holder 1pc
3. 201T-M plastic pH/ATC three-in-one combination electrode 1pc
4.2503-C glass pH combination electrode 1pc
5. MP500 temperature electrode 1pc
6. 2401-M conductivity electrode 1pc
7. pH standard buffer solution（pH4.00, pH7.00 and pH10.01/50mL） 1btl/each
8. 1413μS/cm conductivity standard solution（50mL） 2btls
9. 9V power adapter（meter use）e 1pc
10. RS-232 communication cable 1pc
11. MP522 communication software disk 1pc
12. Operation manual 1unit
13. Brief operation instruction 1unit
14. Packing List 1pc

 

Optional Accessories

Accessory Categry Description Specifications

pH combination 

electrode

 201-C plastic combination pH electrode

Suitable for routine pH measurements,

 widely used, BNC connector。

200-C plastic combination 

pH electrode

Suitable for routine pH measurements, long continuous, 

high precision, BNC plug.
206-C plastic combination pH electrode

Smaller diameter electrode, suitable for small diameter 

container in a test, BNC connector
201T-M plastic three-in-one combination pH electrode

Simultaneous measurement of

 pH and temperature, automatic 

temperature compensation, BNC + RCA plugs.

2501-C glass 

combination pH electrode

 For precise pH test, routine laboratory use, BNC plug.

2503-C glass combination 

pH electrode

For precise pH test, used to measure

 complex samples, BNC plug.
2503D-C glass combination pH electrode

For low-temperature solution and pure water 

pH measurement, BNC plug.
2503G-C glass combination pH electrode

Suitable for high temperature 

solution pH measurements, BNC plug
2503S-C glass combination pH electrode For acid and high-temperature solution pH measurements, BNC plug.
2015P-C plane combination pH electrode

For the surface and trace solution 

pH measurement, BNC plug.

Conductivity 

Electrode

DJS-0.1-M Pure water 

conductivity electrode

K=0.1 cm-1，Automatic temperature compensation, 

for testing the conductivity of high pure water, 4-pin plug
2401-M Glass conductivity electrode

K=1.0 cm-1，Automatic temperature compensation, 

precision laboratory test for conductivity, 4-pin plug.

2301-M Plastic 

conductivity electrode

K=1.0 cm-1，Automatic temperature compensation 

for laboratory and field testing, 4-pin plug.

2310-M Plastic 

conductivity electrode

K=10 cm-1，Automatic temperature 

compensation, used to 

test seawater and concentrated salt water, etc., 4-pin plug
Glass flow cell Equipped with DJS-0.1-M electrode

ORP Composite 

electrode

301Pt-C Plastice ORP 

combination electrode

ORP measurement for conventional, 

wide range of uses, BNC plug
3501Pt –C Glass ORP combination electrode

ORP measurement of routine laboratory,

 test stability, fast response, BNC plug

Temperature 

Electrode

 MP500 Temperature electrode

Stainless steel housing, fast response, 

high accuracy, RCA plugs
pH Buffer pH4.00 buffer 500mL/250mL/50mL（bottle）
pH6.86 buffer 500mL/250mL/50mL（bottle）
pH7.00 buffer 500mL/250mL/50mL（bottle）
pH9.18 buffer 500mL/250mL/50mL（bottle）
pH10.01 buffer 500mL/250mL/50mL（bottle）

Conductivity

 Calibration 

Solution

84 μS/cm Conductivity 

Calibration Solution

 500mL/250mL/50mL（bottle）

1413 μS/cmConductivity

Calibration Solution

 500mL/250mL/50mL（bottle）

12.88 mS/cmConductivity

Calibration Solution

 500mL/250mL/50mL（bottle）

146.6 μS/cmConductivity

Calibration Solution

 500mL/250mL/50mL（bottle）

1408 μS/cmConductivity

Calibration Solution

 500mL/250mL/50mL（bottle）

12.85 mS/cmConductivity

Calibration Solution

 500mL/250mL/50mL（bottle）

Electrode 

soaking

pH（ORP）Combination 

Electrode Soaking Solution

 500mL/250mL/100mL（bottle）

10-5 mol/L Sodium ion electrode 

soaking Solution

Equipped with 7801Sodium electrode . 

500mL/250mL/100mL（bottle）

ORP 

standard solution

222 mV ORP 

Standard solution

 250mL/100mL/50mL（bottle）
Electrode holder

Model 602 Flexible 

Electrode Holder

Nice appearance of the arc-type bracket, you can turn 

360 degrees and vertical lift

Model 601Stirring 

Type Electrode Holder

The electrode holder and magnetic stirrer 

combination of new products.
Model 600 Electrode Holder Cheap simple electrode holder