WHATMAN

CHEMICALLY TREATED PAPER; PAPER CONTAINING CHEMICALS; CHEMICALLY TREATED CELLULOSE; [ CHEMICALLY TREATED GLASS, AND ] CHEMICALLY TREATED SILICA FOR USE IN LABORATORY, CLINICAL OR ENVIRONMENTAL TESTING

LABORATORY EQUIPMENT--NAMELY, CHROMATOGRAPHIC COLUMNS, GAS, WATER AND OTHER LIQUID OR FLUID FILTERING UNITS, IN THE NATURE OF TUBES, CARTRIDGES, MEMBRANE FILTERS AND INTEGRAL HARDWARE THEREFOR; EXTRACTION THIMBLES, AND PROGRAMMABLE ELECTRONICALLY CONTROLLED HOT PLATE/STIRRERS

PHASE SEPARATING PAPER, CHROMATOGRAPHY PAPER, POLYETHYLENE-BACKED ABSORBENT PAPER, AND FILTER PAPER, ARTISTS PAPERS; LENS CLEANING TISSUE PAPERS