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简单介绍：
N,N-二甲基甲酰胺检测管183Measuring Range 0.8 to 2 ppm 2 to 30 ppm 30 to 90 ppm Number of Pump Strokes 2 1 1/2 Correction Factor 0.4 1 3 Sampling Time 1.5，N,N-二甲基甲酰胺183 N,N-Dimethyl formamide
详情介绍：
N,N-二甲基甲酰胺检测管183 N,N-Dimethyl formamide No.183
HCON(CH3)2
| Performance |
MeasuringRange | 0.8 to 2 ppm | 2 to 30 ppm | 30 to 90 ppm |
Number of Pump Strokes | 2 | 1 | 1/2 |
Correction Factor | 0.4 | 1 | 3 |
SamplingTime | 1.5 minutes per pumpstroke | ||
DetectingLimit | 0.1 ppm (n=2) | ||
ColorChange | Pink → Palered | ||
ReactionPrinciple | HCON(CH3)2 + NaOH →R-NH2 2R-NH2 + H2SO4 → (R-NH2)2SO4 | ||
| Coefficient ofVariation | 15% (for2 to 10 ppm), 10% (for 10 to 30 ppm) | ||
| ShelfLife | 3Years | ||
| Correctionsfor temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Amines | - | Plus error | Pale red |
Ammomia | - | Plus error | Pale red |
Hydrazine | - | Plus error | Pale red |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 10ppm | - | 2.2 to 15.2% |