乙基胺C2H5NH2氣體檢測管227S Ethyl amine 1-20ppm

Tube No.227S
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.
CH3CH2NH2＋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 ETHYL AMINE
Substance Interference Coexistence
Ammonia Similar stain is produced. Higher reading are given.
Other amines 〃〃
（NOTE）
This tube scale is calibrated based on Methyl amine and the same scale is available for Ethyl amine.