The SynthwareTM Reaction Flask manufactured by Kemtech America Inc. comes with high vacuum valve with PTFE O-ring at tip and PTFE wiper for protection of Viton® O-ring on shaft.
Specification
Material: Borosilicate glass Valve size: 0-4 mm Sterility: Non-sterile Joint: ST/NS 19/22 Packaging: Pack of 1 Capacity: 50 mL
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SynthwareTM Reaction Flask With High Vacuum Valve, 250 mL, Joint: ST/NS 19/22, Valve Size 0-4 mm, Kemtech America Inc.(CAT#: STEM-L-0784-LC)