YY-3C PH Meter
Used for pH test of various masks.
GB/T 32610-2016
GB/T 7573-2009
1. Instrument level: 0.01 level
2.Measuring range: pH 0.00 ~ 14.00pH; 0 ~ + 1400 mv
3. Resolution: 0.01pH,1mV,0.1℃
4. Temperature compensation range: 0 ~ 60℃
5. Electronic unit basic error: pH±0.05pH,mV±1% (FS)
6. The basic error of the instrument: ±0.01pH
7. The electronic unit input current: no more than 1×10-11A
8. The electronic unit input impedance: not less than 3×1011Ω
9. Electronic unit repeatability error: pH 0.05pH,mV,5mV
10. Instrument repeatability error: not more than 0.05pH
11. Electronic unit stability: ±0.05pH±1 word /3h
12. Dimensions (L×W×H) : 220mm×160mm×265mm
13. Weight: about 0.3kg
14. Normal service conditions:
A) Ambient temperature :(5 ~ 50) ℃;
B) Relative humidity :≤85%;
C) Power supply: DC6V; D) No significant vibration;
E) No external magnetic interference except the earth's magnetic field.
1. Cut the tested sample into three pieces, each 2g, the more broken the better;
2. Put one of them into a 500mL triangular beaker and add 100mL distilled water to fully soak;
3. Oscillation for one hour;
4. Take 50mL of the extract and measure it with the instrument;
5. Calculate the average value of the last two measurements as the final result.
