The Cold Trap LN2 – Immersion Chiller Sleeve is a stainless steel sleeve that adapts the VTA LN2 cold trap glass vessel for use with a liquid nitrogen immersion chiller probe. The sleeve provides a thermally conductive interface between the LN2 immersion chiller coil and the outer surface of the cold trap glass, enabling efficient cold trap cooling without direct LN2 immersion. Compatible with standard VTA cold trap assemblies on VKL and VKS series distillation systems.