No. 4 Vacuum Flask Stopper
Vacuum Flask Stoppers are used for deairing operations. These stoppers will fit pycnometer flasks like Volumetric Flasks or the No. 4 stopper will also fit Iodine Flasks. All stoppers have single holes with barbed fittings for connection to 3/8in vacuum tubing.
No. 1 Stopper will fit 250ml Volumetric Flasks
No. 2 Stopper will fit 500ml Volumetric Flasks
No. 4 Stopper will fit 1,000ml Volumetric Flasks and all Iodine Flasks
Features:
- Forms a leak-proof seal for efficient deairing
- Metal barbed fitting for quick connection of vacuum tubing
Meets Test Methods:
AASHTO T100
ASTM D 854
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