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Leakage testing of industrial grade methanol CH3OH detection tube gas detector
NegotiableUpdate on 05/06
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Overview
Industrial grade methanol CH3OH detection tube gas detector leak test $r $n Methanol detection tube $r $n $r $n The methanol detection tube is a sealed slender glass tube that presents a specific color due to being filled with specific reagents and coloring agents. When a gas sample containing methanol enters the detection tube, a chemical change occurs, causing a color change. The scale corresponding to the boundary of observing color changes is the concentration of methanol in the tested sample.
Product Details
Leakage testing of industrial grade methanol CH3OH detection tube gas detector
Methanol detection tube
The methanol detection tube is a sealed, slender glass tube that presents a specific color due to being filled with specific reagents and coloring agents. When a gas sample containing methanol enters the detection tube, a chemical change occurs, causing a change in color. The scale corresponding to the boundary of observing color changes is the concentration of methanol in the tested sample.
Specification 111:
| Testing Scope | 0.002-0.004% | 0.004-0.02% | 0.02-1.5% | 1.5-4.5% |
| Extraction frequency | 4 times (400ml) | 2 times (200ml) | 1 time (standard) (100ml) | 1/2 time (50ml) |
| correction factor | 1/9 | 1/5 | 1 | 3 |
| Detection Time | 4 points | 2 points | 1 point | 30 seconds |
Testing line: 0.0004% (pumping 4 times)
Color change: light red, light blue
Temperature and humidity correction: Temperature correction is required
Validity period: 3 years
Reaction principle:CH3OH ＋ Cr6＋(Light red)+H2SO4Cr3＋(Light Blue)
111L specification:
| Testing Scope | 20-40ppm | 40-1000ppm | |
| Extraction frequency | 2 times (200ml) | 1 time (standard) (100ml) | |
| correction factor | 1/2 | 1 | |
| pumping time | 6 minutes | 3 minutes |
Detection line: 15ppm (pumping twice)
Color change: light red, light blue
Temperature and humidity correction: Temperature correction is required
Relative standard deviation: 15% (40-200ppm), 10% (200-1000ppm)
Validity period: 3 years
reaction principle：CH3OH+Cr6++H2SO4Cr3+
Other substances that can be detected by this detection tube:
| substance | conversion factor | Extraction frequency | Testing Scope |
| chloroethanol | According to the conversion table | 3 times | 80-200ppm |
111LL specification:
| Testing Scope | 2-20ppm | 20-56ppm | |
| Extraction frequency | 4 times (standard) (400ml) | 2 times (200ml) | |
| correction factor | 1 | 2.8 | |
| pumping time | 8 minutes | 4 minutes |
Detection line: 0.2ppm (pumping 4 times)
Color change: light yellow, light blue-green
Temperature and humidity correction: Temperature correction is required
Relative standard deviation: 15% (2-5ppm), 10% (5-20ppm)
Validity period: 2 years
reaction principle：CH3OH+Cr6++H2SO4Cr3+
111TP specification:
| Testing Scope | 20-300ppm |
| Flow setting | 50ml/min |
| correction factor | 1 |
| Detection Time | 10 points |
Testing line: 3ppm (500ml)
Color change: light yellow, light blue-green
Temperature and humidity correction: Temperature correction is required
Relative standard deviation: 10% (20-100ppm), 5% (100-300ppm)
Validity period: 24 months
reaction principle：CH3OH+Cr6++H2SO4Cr3+
Leakage testing of industrial grade methanol CH3OH detection tube gas detector
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