Gastec 70 Quick-measuring Detector tubes Mercaptans R-SH (0.5-120ppm)
ManufacturerGastec(View more products from this manufacturer)
Model70
Contact
Secure Checkout
Quality Engagement
Easy change and return
Delivery Available
Indicator: 5 to 120 ppm
Measuring Range:
+ 0.5 to 5 ppm, Number of Pump Strokes 2 to 10
+ 5 to 120 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Yellow
Reaction Principle: 2RSH+ PdSO4 → (RS)2Pd+ H2SO4
Coefficient of Variation: 10% (for 5 to 40 ppm), 5% (for 40 to 120 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Performance
| Measuring Range |
|
||
| Number of Pump Strokes |
|
||
| Correction Factor |
|
||
| Sampling Time | 1.5 minutes per pump stroke | ||
| Detecting Limit | 0.2 ppm (n=10) | ||
| Colour Change | White → Yellow | ||
| Reaction Principle | 2R SH+ PdSO4 → (RS)2Pd+ H2SO4 |
||
| Coefficient of Variation | 10% (for 5 to 40 ppm), 5% (for 40 to 120 ppm) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Carbon monoxide | 2000 ppm | + | Pale brown (whole layer) |
| Hydrogen sulphide | 500 ppm | + | No |
| Acetylene, Ethylene | 2000 ppm | + | Pale brown (whole layer) |
Other substance measurable with this detector tube
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| Ethyl mercaptan | 1.0 | 1 to 10 | 0.5 to 120 ppm |
| Isopropyl mercaptan | 2.0 | 1 | 10 to 240 ppm |
| Methyl mercaptan | 0.7 | 1 to 10 | 0.35 to 84 ppm |
| Propyl mercaptan | 4.5 | 1 | 22.5 to 540 ppm |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |
Stay Updated with Offers
Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Quick Support
Direct access to our certified experts