FILTER PAPER CIRCLES WHATMAN GRADE NO.4 18.5CM DIA BOX 100 Universal Glass Bottles Without stopper or stopcock

Without  stopper  or stopcock

Dimensions shown are number of apertures x dimensions and to hold bags with capacities as indicated

CD625-79 or CD625-82

Reference    WBU-200-8 WBU-200-12   WBU-200-18 WBU-200-26                   WBU-200-48                    Tank capacity  litres   8  12  18  26  48  Inner tank L x W  mm  115 x 300  205 x 300   380 x 300  380 x 300  430 x 330  Inner tank depth*

FILTER PAPER CIRCLES WHATMAN GRADE NO.4 18.5CM DIA BOX 100 Universal Glass Bottles Without stopper or stopcockQualitative Grade Grade No. Flowrate Retention microns Wet strength Thickness, mm Ash % 4 Excellent retention of coarse and gelatinous precipitates Fast 20 25 Low* 0. 21 0. 06 *Suitable for gravity or low suction filtration. Care must be taken to prevent rupture of the paper.