High quality SX725 portable pH/Dissolved oxygen meter DO meter

FOB Reference Price:Get Latest Price
$130.00 - $900.00 / Sets | 1 Set/Sets (Min. Order)
Lead Time:
Quantity(Sets) 1 - 3 >3
Est. Time(days) 7 Negotiable
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Quick Details
Place of Origin:
Shaanxi, China
Brand Name:
Model Number:
pH Measuring range:
(-2 ~ 19.99)pH
pH resolution:
0.1/0.01 pH
pH accuracy:
Meter:±0.01pH; Overall: ±0.02pH
Measuring range (mV/ORP/EH):
-1999.9mV ~ 0 ~ 1999.9mV
Dissolved Oxygen measuring range:
(0 ~ 40.00)mg/L(ppm) (0 ~ 200.0)%
Dissolved Oxygen Resolution:
0.1/0.01 mg/L(ppm) 1/0.1 %
Environment temperature:
5 ~ 35 ℃(0.01grade)
Two AA batteries (1.5V x2)
IP rating:
IP57 Dustproof and waterproof
Size and weight:
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 - 3 >3
Est. Time(days) 7 To be negotiated


         High quality SX725 portable pH/Dissolved oxygen                                                  meter DO meter




Product Description

 Main features:



1. Built-in microprocessor chips, intelligent functions such as automatic calibration, automatic temperature compensation, data storage, function set-up, self-diagnose information, automatic power-off and low voltage display. 

2.  Double-parameter meter, equipped with pH electrode and dissolved oxygen electrode, automatic identification of electrode by meter.

3.  Automatic identification of 13 pH standard buffer solutions, three options of standard buffer solutions: Europe and America series, NIST series and China series. 

4. Able to set pH measurement modes of high purity water and pure water with ammonia.

5.  Measurement mode of Dissolved oxygen has the function of automatic temperature compensation, automatic salinity compensation and manual air pressure compensation. 

6.  New polarographic type dissolved oxygen electrode can measure temperature, salinity and dissolved oxygen simultaneously, equipped with special dissolved oxygen electode calibration set, polarization only for 3~5 min.

7.  Meter meets IP57 waterproof rating, equipped with calibration solution and portable case.






Technical parameters:


CategoryProduct NameBasic features and specifications
PHMeasuring range(-2.00 ~ 19.99)pH
Resolution0.1/0.01 pH
AccuracyMeter:±0.01pH; Overall: ±0.02pH
Input current≤2×10-12 A
Input impendance≥1×1012 Ω
Stability±0.01 pH/3h
Temp. compensation range(0 ~ 100)℃(automatic)
ORPMeasuring range (mV/ORP/EH)-1999mV ~ 0 ~ 1999mV
AccuracyMeter:±0.1% FS, Overall: ±15mV
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, Overall:±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)
Atmospheric pressure compensation range(66 ~ 200)kPa (manual)
Automatic calibrationAir saturated by water; water saturated by air
Electrode typePolarogram type
Other Technical ParametersData storage200 groups
Storage contentSeries number, measuring value measuring unit and temperature,
PowerTwo AA batteries (1.5V x2)
Size and weightmeter:(65×120×31)mm/180g;Suitcase: (360×270×76)mm/1.6Kg
Quality and safety certificationISO9001:2000, CE and CMC
Working ConditionEnvironment temperature5 ~ 35 ℃(0.01grade)
Environmental humidity≤85%
IP ratingIP57 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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