technical performance:
1. measurement range: 0-14.0ph
2. level: 0.1
3. liquid crystal display is convenient to carry, and e201 composite electrode is used
4. ph measurement range :0.001 ~ 14.00 ph, measurement accuracy: ± 0.1 ph
5. temperature compensation range: none
6. power supply: 1 dc 9v battery
7. external dimension: 120× 40 & times; 34 mm
8. weight :110g