甲硫醇CH3SH气体检测管130U METHYL MERCAPTAN 0.5-10ppm 返回列表页

甲硫醇CH3SH气体检测管130U METHYL MERCAPTAN 0.5-10ppm

Tube 30U
1. PERFORMANCE
1） Measuring range ：1-10 ppm 0.5-5 ppm
Number of pump strokes ：1/2（50ml） 1（100ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：0.2 ppm（100ml）
4） Shelf life ：2 years
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by Methyl mercaptan at 1 pump stroke
7） Colour change ：Pale yellow→Pink
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
By reacting with Mercuric cholride, Hydrogen chloride is produced and PH indicator is discoloured.
C2H5SH＋HgCI2→RS（HgCI）＋HCI
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
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GAS 􀀀􀀀 To pump
5
4
3
2
1
0.5
100ml
ppm
（White）
DEHUMIDIFIER
130U ETHYL MERCAPTAN
Substance Interference Coexistence
Arsine Similar stain is produced. Higher readings are given.
Hydrogen selenide 〃〃
Phosphine 〃〃
Hydrogen sulphide 〃
Hydrogen cyanide Whole reagent is changed to Red. 〃
Whole reagent is changed to
Sulphur dioxide Pale red, but Pink stain indicates
Mercaptans conc.
（NOTE）
In case of 1 / 2 pump strokes, following formula is available for the actual concentration.
Actual concentration＝2×Reading value