*胺（CH3）3N气体检测管222S Trimethyl amine 1-20ppm 返回列表页

*胺（CH3）3N气体检测管222S Trimethyl amine 1-20ppm

Tube No.222S

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 ：0.3 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.
2（CH3）3N＋H3PO4→〔（CH3）3NH〕2HPO4
4. CALIBRATION OF THE TUBE
VAPOUR PRESSURE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
DEHUMIDIFIER
（White）
20
2 1
468
10
12
14
16
18
222S TRIMETHYL AMINE
Substance Interference Coexistence
Ammonia Similar stains are produced Higher readings are given.
Other amines 〃〃
（NOTE）
This tube scale is calibrated based on Diethyl amine and same scale is available for Trimethyl amine.