MTC Bio's multi-channel solution reservoirs are designed for use with all multichannel pipettes. Standard 4 channel, 8 channel, 12 channel and various special purpose pipettes are all compatible with these disposable, polystyrene reservoirs. To facilitate easy, dripless pour-off of unused reagents and solutions, all versions have indented “spouts” in each corner. Bottoms are fitted with a ""U"" shaped Micro-trough to minimize waste and reagent consumption. Whether your application calls for bulk packaging, packs of 5, or individually wrapped reservoirs, MTC reservoirs are supplied sterile and are packed in environmentally friendly packaging, within biodegradable bags and recycled cardboard boxes. Don't leave valuable reagents in open reservoirs vulnerable to debris or airborne contaminants, MTC Bio's 25mL Protective Lids inhibit evaporation and keep your solutions/reagents safe from dust or contamination. Graduated inner walls Micro-trough U-shaped bottoms Pouring spouts on all 4 corners