Laboratory vacuum pumps may be categorized as pressure pump or high pressure pump depending on the vacuum or positive pressure required. For either pressure or vacuum, our Welch pressure and vacuum station 2511B-01 will deliver 219 torr vacuum or 33 Psig pressure. It is portable, oil-less and works for non-corrosive aqueous-based fumes. Another pressure pump that delivers 60 psi or 25.5 Hg vacuum may be found in the 54908-037 Welch product. Both are extremely economical, safe and dependable with long histories of dependable service in the lab.
