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18121126516（微信同号）13301881771
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Building 10, 4th Floor, Block F, No. 1188 Lianhang Road, Minhang District, Shanghai
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Shanghai Yudong Electronic Technology Co., Ltd
7H Phosphine detection tube
NegotiableUpdate on 09/16
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Overview
7H phosphine detection tube, measuring range 200 to 2500 ppm 2500 to 5500 ppm, multifunctional toxic gas analyzer, emergency gas detection box, odor gas rapid detection box, portable gas rapid detection box, test paper method, can be used for the determination of harmful substances in various states. It is simple, fast, and easy to carry, and can generally produce results within minutes
Product Details
7H Phosphine detection tube
Phosphine No.7H
PH3
| Performance |
Measuring Range |
200 to 2500ppm |
2500 to 5500ppm |
|
Number of Pump Strokes |
1 |
1/2 |
|
Correction Factor |
1 |
2.2 |
|
Sampling Time |
1 minute per pumpstroke |
||
Detecting Limit |
5 ppm(n=1) |
||
Color Change |
Yellow → Darkbrown |
||
Reaction Principle |
Phosphine reacts withpalladium to produce blackish discolouration |
||
| Coefficient ofVariation | 10% (for0.1 to 1 ppm), 5% (for 1 to 5 ppm) | ||
| ShelfLife | 2 Years | ||
| Correctionsfor temperature & humidity |
Temperature correction is necessary | ||
| Store the tubes atcool and dark place. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance |
Concentration |
Interference |
Change color by itself |
Ammonia |
|
No |
No |
Carbonmonoxide |
|
+ |
Dark brown |
Carbon dioxide |
|
No |
+ |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | High pressure gascylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.3ppm | 1 ppm | - |
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