| 摘要 |
PCT No. PCT/GB94/00356 Sec. 371 Date Aug. 25, 1995 Sec. 102(e) Date Aug. 25, 1995 PCT Filed Feb. 23, 1994 PCT Pub. No. WO94/20215 PCT Pub. Date Sep. 15, 1994An analytical device (1) for use in assay procedures comprises at least one liquid flow channel of porous material leading from a channel end to an analytical site (2) via a localized reagent site (3). A liquid-impermeable barrier (6) is arranged adjacent to the reagent site (3) in the liquid flowpath to slow the transport of the reagent to the analytical site (2) by creating a substantially stagnant zone (10) which has the effect of elongating the distribution of reagent in the liquid flow. |
