| Category | Product Name | Basic features and specifications |
| PH |
Measuring range |
（-2.00 ~ 19.99）pH |
|
Resolution |
0.1/0.01 pH | |
|
Accuracy |
Meter:±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) | |
| ORP |
Measuring range (mV/ORP/EH) |
-1999mV ~ 0 ~ 1999mV |
|
Resolution |
1mV | |
|
Accuracy |
Meter:±0.1% FS, Overall: ±15mV | |
| Other Technical Parameters |
Data storage |
200 groups |
| Storage content | Series number, measuring value measuring unit and temperature, | |
|
Power |
Two AA batteries (1.5V x2) | |
|
Size and weight |
meter：(65×120×31)mm/180g；Suitcase： (360×270×76)mm/1.6Kg | |
| Quality and safety certification | ISO9001:2000, CE and CMC | |
| Working Condition |
Environment temperature |
5 ~ 35 ℃（0.01grade） |
|
Environmental humidity |
≤85% | |
|
IP rating |
IP57 Dustproof and waterproof |
| 1. Model SX721 pH/ORP meter | 1unit |
| 2. 201T-S plastic pH/ATC three-in-one combined electrode | 1pc |
| 3. 301Pt-s plastic ORP combined electrode | 3pc |
| 4. pH standard buffer solution(pH4.00, pH7.00 and pH10.01/50mL) | 1btl/each |
| 5. 220mV ORP standard solution(50mL) | 1pc |
| 6.Screw driver | 1pc |
| 7. Spare AA batteries | 2pcs |
| 8. Operation manual | 1pc |
| 9. Carrying case | 1unit |
