Laboratory equipment and supplies, namely, test tubes; Laboratory equipment, namely, plastic, rubber and elastomer closures, seals and stoppers for laboratory bottles; Scientific apparatus, namely, cellular mixed ester membranes for use in the science and research industry; Scientific apparatus, namely, spectrometers and parts and fittings therefor; Scientific apparatus and instruments, namely, chromatography columns for use in purification in the laboratory and parts and fittings therefor; D...