Gastec 4M Quick-measuring Detector tubes Hydrogen sulphide H2S (12.5-500 ppm)
Manufacturer: Gastec Model: 4M - Request a Quotation
- Request a Quotation
- Contact
See more: Equipment Calibration-Inspection & Repair Service
Call for the best price
Hanoi city: (024) 35.381.269
Danang city: (023) 63.747.711
Bac Ninh city: (0222) 730.39.68
Hai Phong city: (0225) 730.03.89
HCM city: (028) 38.119.636
Dong Nai: 0345.689.536
Indicator: 25 to 250 ppm
Measuring Range:
+ 12.5 to 25 ppm, Number of Pump Strokes 2
+ 25 to 250 ppm, Number of Pump Strokes 1
+ 250 to 500 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: White → Brown
Reaction Principle: H2S + Pb(CH3COO)2 → PbS + 2CH3COOH
Coefficient of Variation: 5% (for 25 to 250 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Details
Performance
| Measuring Range |
|
|||
| Number of Pump Strokes |
|
|||
| Correction Factor |
|
|||
| Sampling Time | 45 seconds per pump stroke | |||
| Detecting Limit | 2.5 ppm (n=2) | |||
| Colour Change | White → Brown | |||
| Reaction Principle | H2S + Pb(CH3COO)2 → PbS + 2CH3COOH | |||
| Coefficient of Variation | 5% (for 25 to 250 ppm) | |||
| Shelf Life | 3 Years | |||
| Corrections for temperature & humidity | Unnecessary | |||
| Store the tubes at cool and dark place. | ||||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Nitrogen dioxide |  1/4 |
 |
No |
| sulphur dioxide | 1/1 |
+ | No |
| Mercaptans | No | No |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 1 ppm(2014) | 5 ppm(2014) | 4.0 to 44% |
- Quality Engagement
- Easy change and return
- Delivery Avaliable
- Favorable payment
