Gastec 149 Quick-measuring Detector tubes Methyl metacrylate CH2:C(CH3)CO2CH3 (10~500ppm)
ManufacturerGastec(View more products from this manufacturer)
Model149
Contact
Secure Checkout
Quality Engagement
Easy change and return
Delivery Available
Indicator: 10 to 200 ppm
Measuring Range:
+ 10 to 200 ppm, Number of Pump Strokes 2
+ 200 to 500 ppm, Number of Pump Strokes 1
Sampling Time: 2 minute per pump stroke
Colour Change: Yellow → Pale blue
Reaction Principle: CH2:C(CH3)CO2CH3 + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 10 to 50 ppm), 5% (for 50 to 200 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Performance
| Measuring Range |
|
||
| Number of Pump Strokes |
|
||
| Correction Factor |
|
||
| Sampling Time | 2 minutes per pump stroke | ||
| Detecting Limit | 1 ppm (n=2) | ||
| Colour Change | Yellow → Pale blue | ||
| Reaction Principle | CH2:C(CH3)CO2CH3 + Cr6+ + H2SO4 → Cr3+ | ||
| Coefficient of Variation | 10% (for 10 to 50 ppm), 5% (for 50 to 200 ppm) | ||
| Shelf Life | 2 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 |
| Alcohols, Esters, Ketones | + | Pale blue |
Other substance measurable with this detector tube
| Tube 102L Reading (n=2) | 10 | 20 | 30 | 50 | 100 | 150 | 200 |
| Allyl isothiocyanate (%) | 5 | 10 | 15 | 30 | 70 | 130 | 200 |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 50 ppm | 100 ppm | 1.7 to 8.2% |
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