Patent ID: 7682570

Claim:
A multiwell plate comprising: a body of laminated sheets and water adsorbent materials, wherein said body has plural hollow portions, each of which holds one of said water adsorbent materials, wherein said body of laminated sheets comprises, (a) a bottom sheet; (b) a removal sheet adhered on said bottom sheet and having plural through-holes; (c) a spacer sheet adhered on said removal sheet, having matching through-holes, wherein said through-holes of said removal sheet and said matching through-holes of said spacer sheet overlap with respect to each other, (d) a water adsorbent material fixing sheet adhered on said spacer sheet, having matching through-holes whose diameter is smaller than said through-holes of said spacer sheet, wherein said through-holes of said removal sheet and said spacer sheet; and said matching through-holes of said water adsorbent fixing sheet overlap with respect to each other, and further wherein said water adsorbent materials having diameters larger than the diameter of said through-holes of said water adsorbent material fixing sheet is adhered to said water adsorbent material fixing sheet and covers said through-holes of said water adsorbent material fixing sheet; and (e) a coversheet covering said water adsorbent material fixing sheet.