1. 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.

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

3. 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

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

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

6. 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.

7. 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.

8. Meter has the only product serial number.

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

pH	Measuring range Resolution Accuracy Input current Input impendance Stability Temp. compensation range	(-1.999 ~ 19.999)pH 0.1/0.01/0.001 pH Meter:+/- 0.002 pH, connect meter with electrode:+/- 0.01pH ≤1×10-12 A ≥3×1012 Ω +/- 0.002 pH/3h (0 to 100) ℃(automatic or manual)
mV	Measuring range(mV/ORP/EH) Resolution Accuracy	-1999.9mV ~ 0 ~ 1999.9mV 0.1mV +/- 0.03% FS
Dissolved Oxygen	Measuring range Resolution Accuracy Response time Residual current Temp. compensation range Salinity compensation range Air pressure compensation Automatic calibration Electrode type	(0 ~ 40.00)mg/L(ppm)  (0 ~ 200.0)% 0.1/0.01 mg/L(ppm)  1/0.1 % Meter:+/- 0.10 mg/L, connect meter with electrode: +/- 0.40 mg/L  ≤30 s(25℃, 90% response) ≤0.1 mg/L (0 ~ 45)℃(automatic) (0 ~ 45)ppt(automatic) (80 ~ 105)kPa(automatic) Air saturated by water; water saturated by air Polarogram type
Temperature	Measuring range Resolution Accuracy	-10℃~ 110℃ 0.1℃ 5~ 60℃range: +/- 0.4℃  other range: +/-0.8℃
Other Technical Parameters:	Data storage Storage content   Power Communication connector Size and weight Quality and safety certification	300 groups Measuring value series number, measuring value, temperature, ATC or MTC state, measuring date and time DC9V/300mA RS232 160 *190* 70mm/880g ISO9001:2008, CE and CMC
Working Condition	Environment temperature Environmental humidity IP rating	5 ~ 35 ℃(0.01grade) 15 ~ 30 ℃(0.001grade) ≤75% IP54 Dustproof and waterproof

 

Package

1.. Model  pH/ DO meter 1set
2.  flexible electrode holder 1pc
3.  intelligent stirrer 1set
4.  plastic pH/ATC three-in-one combination electrode 1pc
5. glass pH combination electrode 1pc
6.  temperature electrode 1pc
7.  DO electrode 1pc
8. pH standard buffer solution(pH4.00, pH7.00 and pH10.01/50mL) 1btl/each
9. 9V power adapter(meter use)e 1pc
10. 6V power adapter(stirrer use) 1pc
11.  membrane cap(DO electrode use) 3pc
12.  DO electrode inner solution(30mL) 1btl
13. Cathode polishing paper 2pc
14.  stirring bead 3pc
15.AA battery 2pc
16. RS-232 communication cable 1pc
17. communication software disk 1pc
18. Operation manual 1unit
19. Brief operation instruction 1unit
20. Packing List 1pc