Labconco 7544400 Fast-Freeze Flask Top

Price is for one Fast-Freeze flask top (with 3/4″ adapter diameter) only.

The Labconco 75444 (often listed as 7544400) is a flexible, silicone rubber Fast-Freeze Flask Top designed for laboratory freeze dryers. It acts as a non-contaminating lid and is fully compatible with 600, 750, 900, 1200, and 2000 ml flask bottoms. Complete Fast-Freeze flasks attach directly to valve ports on Labconco manifolds and drying chambers using either glass or stainless steel adapters (e.g., 0.5 in or 0.75 in diameter). Each complete flask assembly generally consists of three parts: a glass bottom, the silicone rubber top, and specialized filter paper.