PS, sterile. These 50×9 mm Petri dishes with absorbent pads are ideal for culturing micro-organisms on either agar or broth based media.

• Stackable
• Squared off edges on both the top and bottom provide convenient grips for one handed opening
• Snug fitting top ensures that neither the absorbent pad nor the agar media will dry out during incubation
• Frosted area on top of lid permits labelling

They are designed to accommodate 47 mm diameter membrane filters.