MP525 pH/DO dissolved oxygen meter

FOB Reference Price:Get Latest Price
$130.00 - $900.00 / Sets | 1 Set/Sets (Min. Order)
Lead Time:
Quantity(Sets) 1 - 5 >5
Est. Time(days) 7 Negotiable
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Quick Details
Place of Origin:
Shaanxi, China
Brand Name:
Model Number:
pH Measuring range:
(-1.999 ~ 19.999)pH
pH resolution:
0.1/0.01/0.001 pH
pH accuracy:
Meter:±0.002 pH, connect meter with electrode:±0.01pH
mV measuring range(mV/ORP/EH):
-1999.9mV ~ 0 ~ 1999.9mV
Dissolved Oxygen measuring range:
(0 ~ 40.00)mg/L(ppm) (0 ~ 200.0)%
Temperature range:
-10℃~ 110℃
Communication connector:
IP rating:
IP54 Dustproof and waterproof
Size and weight:
160 x190x70mm/880g
Supply Ability
Supply Ability:
500 Set/Sets per Month
Packaging & Delivery
Packaging Details
Qualified wooden package/standard carton box with perfect inner protection
Lead Time :
Quantity(Sets) 1 - 5 >5
Est. Time(days) 7 To be negotiated


               MP525 pH/DO dissolved oxygen meter 




Product Description

 Main features:



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.

1. There are three different measurement modes: stable display mode; time measurement mode; continuous measurement mode.

2. 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.

3.  High purified water and ammonia added purified water pH measuring mode can be set up, especially suitable for electric power and petrochemical industry

4. With EH redox potential measuring mode can directly display ORP value which against standard potential of hydrogen electrode.

5.  Equips new type of DO electrode which has function of automatic temperature compensation and automatic salinity compensation as well as automatic air pressure compensation inside meter to make DO measuring mode has temperature, air pressure and salinity automatic compensation, easy to use, accurate to measure. 

6. Polarogram type DO electrode has special electrode calibration cap. Only needs 3 to 5 minutes for electrode polarization. Electrode adopts combination diaphragm cap which very convenient to use. Each DO electrode equips with three spare diaphragms caps.

7.  Meter has the only product serial number.

8.  Dustproof and waterproof meter meets IP54 standards. All sockets are seal protected by the silica gel caps.





Technical parameters:


pHMeasuring range(-1.999 ~ 19.999)pH
Resolution0.1/0.01/0.001 pH
AccuracyMeter:±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)
mVMeasuring range(mV/ORP/EH)-1999.9mV ~ 0 ~ 1999.9mV
Accuracy±0.03% FS
Dissolved OxygenMeasuring range(0 ~ 40.00)mg/L(ppm)  (0 ~ 200.0)%
Resolution0.1/0.01 mg/L(ppm)  1/0.1 %
AccuracyMeter:±0.10 mg/L,connect meter with electrode:±0.40 mg/L
Response time ≤30 s(25℃, 90% response)
Residual current≤0.1 mg/L
Temp. compensation range(0 ~ 45)℃(automatic)
Salinity compensation range(0 ~ 45)ppt(automatic)
Air pressure compensation(80 ~ 105)kPa(automatic)
Automatic calibrationAir saturated by water; water saturated by air
Electrode typePolarogram type
TemperatureMeasuring range-10℃~ 110℃
Accuracy5~ 60℃range:±0.4℃  other range:±0.8℃
Other Technical Parameters:Data storage300 groups
Storage contentMeasuring value series number, measuring value, temperature, ATC or MTC state, measuring date and time
Communication connector160 × 190 × 70mm/880g
Size and weightISO9001:2008, CE and CMC
Quality and safety certification 
Working ConditionEnvironment temperature5 ~ 35 ℃(0.01grade) 15 ~ 30 ℃(0.001grade)
Environmental humidity≤75%
IP ratingIP54 Dustproof and waterproof




Packaging & Shipping


Our Services

Warranty Service


From the date of acceptance, we can provide 12 months quality guarantee, all the maintenance costs and accessories parts costs are free within the date of quality guarantee (spare and accessories parts costs from instrument faults by human factors will be charged proper costs).


After the date of quality guarantee, we will in charge of maintain instrument, and charge proper costs according to actual maintenance costs.


Company Information

Company information



Our motto: First-Rate Service, First-Rate Quality.

Xi’an Heb Biotechnology Co., Ltd, is established in 2004, has passed more than 10 years, is a technological innovation-based enterprise provided with integration of research, develop, manufacture and marketing. Nowadays, our products has gotten extensive application in Asia, European and America, even spread all over domestic laboratories. The brand of Xi’an Heb has become one of the popular and reliable brands among our customers.



Main instruments in our company: double-layer glass reactor ( jacketed glass reactor), rotary evaporator, low-temperature cooling liquid circulating pump (DLSB refrigerated circulator or chiller), multi-purpose circulating water vacuum pump, high and low temperature circulating system, high temperature oil bath(heating circulation bath), diaphragm vacuum pump, rotary vane vacuum pump, water bath/oil bath series, incubator series, drying oven series, centrifuge series, ultrasonic cleaner series etc. These scientific experimental instruments and industrial assorted equipment amount to more than 10 series and 100 types. Our products passed ISO9001 International Quality System Certification,and some products passed CE certification. 


Welcome new and old customers to our factory, and we guarantee that our products have high-quality and more favorable price.


HEB wants to joint hands with you to create more precise experimental instruments.



1. Are you the factory?


Yes, we’re.

Established in 2004, we manufacture rotary evaporator, cylindrical jacketed reactor, cryostat etc.

In 2006 year, we associated with our soul partner QiXin instrument, developed commonly new production line, now, we manufacture CO2 Incubator, Cooling Incubator, Shaker Incubator, Blast Oven, Vacuum Oven, Climatic chamber and those products. Etc.


2. What is the delivery time?


Normally, we have stocks for our hot sale products, the delivery time is about 5-10 days. For the customized instrument, it’s about 10~20 days. 


3. What’s the warranty period? How do you provide this?


One year (12 months).

We have very strict inspection, the instruments which you received is high-quality and reliable.

If there’s any error, we’ll provide you the on line solution with in 12 hours. We’ll provide you the spare parts and the shipping cost totally free.

If the problem was caused by the instrument quality, and cannot be repaired, we’ll ship you the new one.


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