邻甲苯胺C6H4（CH3）（NH2）气体检测管105SD O-TOLUIDINE 2-22ppm 返回列表页

邻甲苯胺C6H4（CH3）（NH2）气体检测管105SD O-TOLUIDINE 2-22ppm

Tube 05SD
1. PERFORMANCE
1） Measuring range ：1-20 ppm 0.2-1 ppm
Number of pump strokes 1（100ml） 5（500ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：0.1 ppm（100ml）
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.：5％　RSD-high：5％
3. CHEMICAL REACTION
By reacting with Phosphoric acid, PH indicator is discoloured.
2NH3＋H3PO4→（NH4）2PO4
4. CALIBRATION OF THE TUBE
PERMEATION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
20
18
16
14
12
10
8
6
4
2 1
100ml
ppm
GAS To pump
DEHUMIDIFIER
（White）
105SD AMMONIA
Substance Interference Coexistence
Amines Similar stain is produced. Higher readings are given.
（NOTE）
When the concentration is below 1 ppm, 2 to 5 pump strokes can be used to detemine the lower concentration.
Following formula is available for actual concentration.
Actual concentration＝Reading value× 1
Number of strokes