A Class of One. Whatman. Glass m i c r o f i b r e filters. Retention 0.7 /i.m to 2.7 μ,ιη; high speed; high loading capacity The purity of borosilicate glass. N o t h i n g else. Consistent u n i f o r m i t y . Grades for every application. Circles and sheets. From laboratory supply dealers w o r l d w i d e . For comprehensive technical literature, please write: Whatman Laboratory Products Inc. Whatman Paper Division Π 9 Bridewell Place, Clifton, New Jersey 07014, Tel: (201)773-5800.
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