| 摘要 |
PCT No. PCT/SE82/00057 Sec. 371 Date Oct. 14, 1982 Sec. 102(e) Date Oct. 14, 1982 PCT Filed Mar. 1, 1982 PCT Pub. No. WO82/03127 PCT Pub. Date Sep. 16, 1982.An indicator is disclosed, which is intended for detecting at least one test substance in a test medium, comprising a carrier and a reaction system consisting of at least a first reactant and a second reactant, applied separately on the carrier, said first reactant being intended to travel by diffusion to the second reactant through a parth in the carrier, soaked by the test medium, while reacting with the test substance. The indicator is characterized in that the first reactant is applied within at least one limited locality, while the second reactant is applied within at least one locality, on a varying distance from the locality of the first reactant.
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