PERFORMANCE OF ROUTINE CHEMICAL REACTIONS

摘要

1354286 Filters K D BAGSHAWE 19 April [13 May 1970 29 Dec 1970] 23262/70 and 61627/70 Heading B1D [Also in Division G1] A vacuum filtration unit comprises conveyor band 31 comprising filter material of for example glass fibre and vacuum filtration beds 33, 34. The band 31 is fed stepwise past station 37, where pre-soak solution is fed from nozzle 38, station 47 where an analytical reaction mixture is filtered through the band and porous filter support 48, a subsequent station over filtration bed 34 where wash solution is supplied from wash head 55, and past a drying location 66 comprising heating element 67 and fan 68. A device for use in analysis and comprising a number of separate end-to-end interfitting sub-units (Fig. 1, not shown) may include as the base of one sub-unit a filter membrane of cellulose acetate or glass fibre sheet supported on a rigid or semi-rigid disc of porous polythene.