Solinst Bladder Pumps have been long known to have Teflon® bladders backed with a 10-year warranty. These are ideal for dedication and VOC monitoring. Solinst also offers an inexpensive disposable polyethylene bladder, for clients who use a portable pump, or prefer to replace bladders at regular intervals, to prevent cross-contamination. Replacement is fast and easy, with no special tools or equipment required.