二甲胺（CH3）2NH氣體檢測管227S Dimethyl amine 1-20ppm

Tube No.
1. PERFORMANCE
1） Measuring range ：1-20 ppm
Number of pump strokes 1（100ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：0.2 ppm
4） Shelf life ：3 years
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by 1 pump stroke
7） Colour change ：Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：10％　RSD-high：10％
3. CHEMICAL REACTION
By reacting with Phosphoric acid, PH indicator is discoloured.
（CH3）2NH＋H3PO4→（CH3NH3）2HPO4
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
20
18
16
14
12
10
8 6 4 2 1
100ml
ppm
DEHUMIDIFIER
（White）
????
227S DIMETHYL AMINE
Substance Interference Coexistence
Ammonia Similar stain is produced. Higher readings are given.
Other Amines 〃〃