This Chemglass AF-0512-01 Airfree Lafler-style pressure release Schlenk bubbler is a specialty borosilicate glass bubbler for inert gas manifolds, Schlenk lines, and air/moisture-sensitive reaction setups. Its dual-chamber design provides purge-gas flow monitoring, check-valve protection against oil/air backflow, and adjustable pressure relief through the small chamber, with Chemglass/Fisher listing the pressure release valve range as 2 to 49 PSI and 4 PSI recommended for most vacuum/inert systems. The unit is approximately 300 mm H x 150 mm W with 11 mm OD hose connections at the largest ring and is designed to be filled halfway with mineral oil in chambers D and E for proper operation. Good fit for organic synthesis, glovebox/manifold support, Schlenk-line purge protection, and inert-atmosphere lab glassware setups. Buyer should review photos for exact condition, included valve/plug, chips/cracks, staining, and any residue before purchase.
