Gastec 77 快速叔丁基硫醇和二甲基硫化物测量检测管SH(CH3)3CSH（1~15 mg /立方公尺）

制造商: Gastec
Model: 77
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技术规格
制造商消息

Indicator: 1 ~ 15 mg/m^3
Measuring Range: 1 ~ 15 mg/m^3, Number of Pump Strokes 1
Sampling Time: 20 minute per pump stroke
Colour Change:
+ TBM tube: Yellow → Pink
+ DMS tube: Pink → Pale yellow
Reaction Principle:
+ (CH3)3CSH + HgCl2 → (CH3)CSHgCl + HCl,
+ HCl + Base → Chloride compound,
+ (CH3)2S + KMnO4 (Pink) → Pale yellow product
Coefficient of Variation: 10% (for 1 to 5 mg/m^3), 5% (for 5 to 15 mg/m^3)
Nr. of tests: 5
Pump: GV-100S/110S

Details

Performance (Simultaneous detector tube)

Detector Tube

TBM Tube

DMS Tube

Measuring Range

1 to 15 mg/m³

Number of Pump Strokes

Correction Factor

Sampling Time

2 minutes per pump stroke

Detecting Limit

0.2 mg/m³ (n=1)

Colour Change

Yellow → Pink

Pink → Pale yellow

Reaction Principle

(CH3)3CSH + HgCl2 → (CH3)CSHgCl + HCl
HCl + Base → Chloride compound
(CH3)2S + KMnO4 (Pink) → Pale yellow product

Coefficient of Variation

10% (for 1 to 5 mg/m³), 5% (for 5 to 15 mg/m³)

Shelf Life

2 Years

Corrections for temperature & humidity

Temperature correction is necessary

Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.

Possible coexisting substances and their interferences (NOTE)

TBM Tube
Substance	Concentration	Interference	Change colour by itself to

Hydrogen sulphide		+	Pink
Mercaptans		+	Pink
DMS Tube
Substance	Concentration	Interference	Change colour by itself to
Olefins		+	Pale yellow
Tetrahydrothiophene		+	Pale yellow