Polylab 8170 Laboratory Tray8170 Polylab Laboratory Tray Needless to say, Polylab Laboratory Tray molded in polypropylene is a multipurpose tray that can be used for sterilizing, drying glassware, porcelainware & other laboratory instruments. These steam autoclavable trays have tapered walls that prove good for nesting. Code Particulars Packing 81701 450 x 350 x 75 mm 10 Pcs 81702 375 x 300 x 75 mm 10 Pcs