o-Cresol Detection Tubes (0.4 to 62.5 ppm)
Gastec Detection Tube No. 61 measures o-Cresol with a Range of 0.4-62.5 ppm.
- Measuring range:
- 0.4 to 1 ppm
- 1 to 25 ppm
- 25 to 62.5 ppm
- Number of Pump Strokes: 4, 2, 1
- Correction Factor: 0.4, 1, 2.5
- Detecting Limit: 0.1 ppm (4 pump strokes)
- Sampling Time: 1.5 minutes per pump strokes
- Changes from Pale Yellow to Gray
- Corrections for tempearture & humidity: Temperature correction is necessary
- Relative Standard Deviation: 15% (for 1 to 5 ppm), 10% (for 5 to 25 ppm)
- Reaction Principle: C6H4(CH3)OH + Ce(NO3)62- → C6H4(CH3)OCe(NO3)52-
- 2 Year Shelf Life (in the refrigerator)
- TLV-TWA, C (ACGIH) (ppm): 20mg/m^3(IFV)
- Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Phenol |
|
+ |
Gray |
| Amines |
≧ 2000 ppm |
+ |
White |
| Ammonia |
≧ 2000 ppm |
+ |
White |
Other substance measurable with this detector tube:
| Substance: |
Correction Factor: |
No of Pump Strokes: |
Measuring Range: |
| m-Cresol |
1.0 |
2 |
1 to 25 ppm |
| p-Cresol |
1.0 |
2 |
1 to 25 ppm |
o-Cresol Detection Tubes (0.4 to 62.5 ppm)
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