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Detection strip for detecting and identifying chemical air contaminants, and portable detection kit comprising said strips

  • US 5,035,860 A
  • Filed: 02/20/1990
  • Issued: 07/30/1991
  • Est. Priority Date: 02/24/1989
  • Status: Expired due to Fees
First Claim
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1. A portable detection kit for detecting and identifying chemical air contaminants, comprising a number of detection strips and at least one device for breaking the reservoirs contained in the detection strips,said device comprising one or more spaced switches, a base plate and an open space between the switches and the base plate which is proportioned so that a detection strip can be inserted into it, in which the switches can be switched, and are constructed so that in the presence of a detection strip provided in the device, upon switching a mechanical pressure is exerted on the reservoirs via a flexible strip, said pressure causing the reservoirs on the carriers supported by the base plate to be broken,wherein the detection strips each comprise a holder having a plurality of spaced carriers, which are capable of absorbing the air contaminants and having a plurality of color-producing agents opposite the carriers, which agents, in contact with the absorbed air contaminants, can cause a color reaction in the presence of a liquid, said detection strip being characterized in that the color-producing agents, dissolved in the quantities of liquid required for the color reaction, are contained in closed reservoirs having walls which are easily broken by mechanical force, and the collective reservoirs are provided between the carriers and a flexible strip in such a manner that when a mechanical pressure is exerted on said flexible strip at the area of the reservoirs said flexible strip will yield, as a result of which the reservoirs, which are supported by a suitable support, will break and the contents thereof will be contacted with the absorbed air contaminants.

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