Adapter Bent 75°

Precise Angular Connections Using 75° Bent Adapters

When you're running a distillation and the condenser needs to sit at an angle that won't crowd your hotplate or bump into the fume hood wall, a bent adapter becomes your best friend. Bent adapters at 75° create that sweet spot between vertical and horizontal orientations, letting vapor travel smoothly from your distilling flask to the condenser without forcing awkward positioning.

Last month, a colleague was setting up a fractional distillation with limited bench space. She initially tried a Claisen adapter with a straight connection, but the condenser extended too far horizontally. Swapping to a 75° bent adapter immediately solved the clearance issue while maintaining efficient vapor flow. The angle directed condensate back toward the collection flask naturally, reducing the chance of product loss.

Space-Saving Laboratory Configurations

• Rotary evaporators often benefit from angled connections when positioning receiving flasks beneath the evaporation flask—the 75° bend provides clearance for the rotation mechanism
• Vacuum distillation setups gain vertical space when connecting to overhead condensers, especially useful in crowded fume hoods
• Works alongside Adapter Fractionation Connecting 75° with socket for multi-stage separation processes where multiple angular adjustments optimize column height
• Pairs with circulating chillers and heaters by positioning condenser inlets at accessible angles for tubing connections

Material Construction and Heat Resistance

Manufactured from low-expansion borosilicate glass, these adapters handle thermal stress during reflux operations without cracking. The annealed construction withstands temperature differentials between hot vapor and cooler glass surfaces. Standard taper joints—14/20, 19/22, and 24/40 sizes—ensure compatibility across your existing glassware inventory. The smooth interior bore prevents vapor condensation on rough surfaces, maintaining consistent flow rates during critical separations.

Compatible Apparatus Arrangements

Connect distilling columns to condensers in glass reactors where the reaction vessel sits below the collection point. The 75° angle accommodates side-arm flask configurations without requiring custom support stands. When assembling vacuum manifolds, these adapters redirect gas flow around obstructions while maintaining seal integrity at ground glass joints. Pro tip: Apply a thin layer of vacuum grease to joints before assembly—the angled connection creates slight lateral stress that benefits from proper lubrication during disassembly.