Nalgene™ Analytical Test Filter Funnels, 250mL, white with black grid

Use these economical sterile disposable filter funnels to perform microbiological QC testing and analysis of water, food/beverage, raw material and finished product. The squeeze and twist funnel is easy to remove for retrieval of the CN membrane.

Features:

• High impact polystyrene collars are rugged for reliable performance
• Preassembled, sterile, individually are bagged to ensure sample integrity
• Adapters accommodate No. 8 stoppers for use with 0.5 in. hole in vacuum manifolds or filter flasks
• 47mm diameter cellulose nitrate membrane is certified for water quality work
• 250mL sizes are useful when testing beverages that may foam
• Cat. No. 147-0045 features gray membrane that turns black when wet, making it easier to detect and count growing colonies

Note: Designed for single use only

Includes: Six funnel adapters with each case