Laboratory equipment and supplies, namely, fraction collectors, magnetic stirrers, multi-position stirrers, multi-position hot plate stirrers, membrane filters for microscopy, membrane filters for particle analysis and microorganism testing, membrane filters for blotting and hybridization, mixed cellulose ester membrane filters, cellulose acetate membrane filters, polytetrafluoroethylene (PTFE) membrane filters, coated cellulose acetate membrane filters, cellulose nitrate membrane filters, nylon membrane filters, PES membrane filters, Mixed Cellulose Esther Membrane Filters, Gridded Cellulose Nitrate Membrane Filters, Gridded Mixed Cellulose Ester filters, vacuum filter holders, disposable syringe filters for biological and HPLC applications, petri dishes, vacuum filtration apparatus and instruments, stainless steel syringe holders, stainless steel filter holders, Stainless Steel Spare Manifold, plastic filter holders, polypropylene membrane filter holder, centrifugal filter holders, phase separating filter papers, chromatography papers, glass fiber filter papers, quartz fiber filter papers, thimble filters, polytetrafluoroethylene (PTFE) filter papers, filter papers for blood sampling, filter papers used in milk sediment testing equipment, ultrafilter units for increasing microfiltration membrane life and ultrafiltration membrane life by stirring force, in connection with dewatering and concentrating proteins, enzymes, virus, and other macromolecules; disposable ultrafilter units, membrane filters for laboratory use; stirring machines for laboratory use; laboratory filters; absorbent cellulose pads for laboratory use; filter papers for laboratory use, vial, septa caps, PTFE Air Vent Filters, Syringe Filters for HPLC and UHPLC, Filters for Gas Chromatography, materials for invitro diagnostics, nitrecellulose membrane