250ml Bump Trap 24/40 Male to 24/40 Female


Bump traps are used on rotary evaporators between the evaporating flask and condensing column. They help prevent contamination in the collection vessel when “bumping” occurs. When “bumping” occurs substance in the evaporating flask shoots up and ends up in the collection flask, which is unwanted when operating.

This bump trap features a 250ML round flask with upper 24/40 female ground joint and bottom 24/40 male ground joint. With the use of ground joints vacuum grease must be applied to assure a tight seal. Internally, there is a tube that extends and two openings on the sides. This is what stops the bumping from occurring. If any substance makes its way through the openings, it will get trapped in the flask. Vapor is still allowed to flow freely through the openings. Recommend using this bump trap on 2L rotary evaporators and other distillation setups  it has an overall length of 9".




Flask Size


Top Connection

24/40 Female Ground Joint

Bottom Connection

24/40 Male Ground Joint



*Notice to customers: All units are inspected for broken glassware or parts before leaving BVV™. If the unit arrives damaged (this does not include minor imperfections or scuffs in glassware), the customer MUST contact BVV™ within 72 hours from carrier delivery to file a claim. If the customer DOES NOT contact BVV™ within 72 hours from carrier delivery, then BVV™ cannot issue any replacement(s) or compensation for the item; a new purchase will need to be made for a replacement.

**Glassware Safety Disclaimer: Best Value Vacs is not responsible for failure of glassware which must be inspected before and after every use because it may eventually develop imperfections or damage through normal usage, mishandling, and stress caused by temperature variations. If an imperfection or damage is noted while inspecting the glassware DO NOT use the glassware because it can fail causing bodily harm or damage to the surrounding area.**

250ml Bump Trap 24/40 Male to 24/40 Female

Product form

SKU: BT250-2440


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