Petri dish with Petri-Pad Petri-Pad petri kutusu, steril, 47 mm sterile, Single use, diam. 47 mm, pkg of (600 units), For microbial analysis material cellulose pad(s) clear device polystyrene Quality Level 100 sterility sterile manufacturer/tradename Petri-Pad™ packaging pkg of (600 units) technique(s) sterile filtration: suitable diam. 47 mm color clear