PALL 4761ME Microcheck® Beverage Monitor with ME25 Membrane,100mL, 0.45µm, White, Gridded, 50/pk

MicroCheck™ II beverage monitor is an easy-to-use disposable filter funnel designed to meet the needs for microbial analysis of beverages. 

Features:
Can convert to a Petri dish for culturing or easily remove the membrane for placing on separate agar dish.
Ready to use; simply remove from box and place directly on a filter manifold. No need for rubber stoppers or adapters.
Volume graduations are marked clearly for easy reading from any point of view.
One-liter glass funnel is graduated from 300 to 1,000 mL in 50 mL increments.
300 mL glass funnel is graduated from 100 to 250 mL in 25 mL increments. Stepped stem fits into standard one-hole stoppers (9 mm).