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You are here: Home > Products > Chemical > PH meter > Benchtop > MP521Products

MP521

Lab pH/Conductivity Meter

Features

pH + Conductivity Double-Parameter measurement meter which is suitalbe for general measurement in laboratory. It is suitable for measuring the pH value of moderate ionic strength aqueous solution, and conductivity values of conventional solution.
 
The most widely used pH + Conductivity Double-Parameter measurement meter.
 
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 pH buffer solution. User can choose anyone from three series of standard buffer solutions: Europe & USA series, NIST 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.
 
Can switch Conductivity, TDS, Salinity and Resistivity.
 
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~ 19.99pH
Resolution 0.1/0.01/0.001 pH
Accuracy Meter:±0.01 pH, connect meter with electrode:±0.01pH
Input current ≤1×10-12 A
Input impendance ≥3×1012 Ω
Stability ±0.01 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:(0.00~20.00μS/cm 20.0~200.0μS/cm
200~2000μS/cm  2.00~20.00mS/cm
20.0~200.0mS/cm
Resistivity:(0 ~ 100MΩ·cm
TDS:  0 ~ 100g/L
Salinity 0 ~ 100ppt
Resolution 0.01/0.1/1μS/cm  0.01/0.1/1 mS/cm
Accuracy Meter:±1.0% FS,connect meter with electrode:±1.5% 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~ 60range±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 MP521 Lab pH/Conductivity meter 1set
2. Model 602 flexible electrode holder 1pc
3. 201T-M plastic pH/ATC three-in-one combination electrode 1pc
4. 2301-M plastic conductivity electrode 1pc
5. pH standard buffer solutionpH4.00, pH7.00 and pH10.01/50mL 1btl/each
6. 1413μS/cm conductivity standard solution50mL 2btls
7. 9V power adaptermeter usee 1pc
8. RS-232 communication cable 1pc
9. MP521 communication software disk 1pc
10. Operation manual 1unit
11. Brief operation instruction 1unit
12. 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-1Automatic temperature compensation, 

for testing the conductivity of high pure water, 4-pin plug

2401-M Glass conductivity electrode

K=1.0 cm-1Automatic temperature compensation, 

precision laboratory test for conductivity, 4-pin plug.

2301-M Plastic conductivity electrode

K=1.0 cm-1Automatic temperature compensation

 for laboratory and field testing, 4-pin plug.

2310-M Plastic conductivity electrode

K=10 cm-1Automatic 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/50mLbottle
pH6.86 buffer 500mL/250mL/50mLbottle
pH7.00 buffer 500mL/250mL/50mLbottle
pH9.18 buffer 500mL/250mL/50mLbottle
pH10.01 buffer 500mL/250mL/50mLbottle

Conductivity 

Calibration Solution

84 μS/cm Conductivity 

Calibration Solution

500mL/250mL/50mLbottle

1413 μS/cmConductivity

Calibration Solution

500mL/250mL/50mLbottle

12.88 mS/cmConductivity

Calibration Solution

500mL/250mL/50mLbottle

146.6 μS/cmConductivity

Calibration Solution

500mL/250mL/50mLbottle

1408 μS/cmConductivity

Calibration Solution

500mL/250mL/50mLbottle

12.85 mS/cmConductivity

Calibration Solution

500mL/250mL/50mLbottle
Electrode soaking

pHORPCombination 

Electrode Soaking Solution

500mL/250mL/100mLbottle

10-5 mol/L Sodium ion electrode 

soaking Solution

Equipped with 7801Sodium electrode . 

500mL/250mL/100mLbottle

ORP standard 

solution

222 mV ORP Standard solution 250mL/100mL/50mLbottle

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