scientific instruments and related accessories for use in life sciences research, namely, blotting instruments, namely, [ vacuum transfer units, ] semi-dry transfer units, tank transfer units, nitrocellulose membranes, [ incubation manifolds, incubation trays, filtration manifolds, hybridization ovens, hybridization chambers and water baths; blot gel processing instruments; densitometers; dialyzers; DNA pulsed field instruments; ] DNA sequencing instruments, namely, direct blotting sequencers...