Detection strip for detecting and identifying chemical air contaminants, and portable detection kit comprising said strips
US5035860A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a portable detection kit including a number of detection strips and at least one device for breaking reservoirs within the detection strips. The detection strips detect and identify chemical air contaminants and comprise a holder. The holder has a plurality of spaced carriers which are capable of absorbing the air contaminants and optionally comprise reagents which can be influenced by the air contaminants. The holder further has a plurality of color-producing agents opposite to the carriers. The agents, in contact with the absorbed air contaminants or with the reagents, can cause a color reaction in the presence of a liquid. The color-producing agents, which are dissolved in the quantities of liquid required for the color reaction, are held in closed reservoirs having easily breakable walls. The collective reservoirs are provided between the carriers and a flexible strip is such a manner that when mechanical pressure is exerted on the flexible strip at the area of the reservoirs, the flexible strip will yield, as a result of which the reservoirs will break and the contents thereof will be contacted with the absorbed air contaminants or with the reagents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.