74047685
Apr 10, 1990
Nov 10, 1992
chemicals and polymer chemicals for use in industry and science for separation and analysis; chemical reagents, standards, and buffers for use in industrial and scientific research laboratories
Chemicalscolumns for use with chromatography instruments; high-performance liquid chromatography columns; high-performance liquid affinity chromatography columns, analysis kit for chromatography comprised of chromatography columns and filters
Electrical and Scientific Apparatus