QTY Per Sell: 1 Efficient and cost-effective covering for test tubes; beakers, vials; petri dishes; flasks; various other instruments and objects with irregular surfaces; overwrap to further secure stoppers, lids and caps; and shelf or tray liner to prevent slipping of bottles or instruments Flexible and self-sealing material allows it to cling around irregular shapes and surfaces Stretches more than 200% of original length Resistant up to 48 hours against many polar substances Reduce the risk of tampered data with a covering that is odorless, colorless and semi-transparent Prevents moisture and volume loss due to material composition and tight seal t recommended for use with chlorinated, non-polar aliphatic and aromatic solvents Film becomes soft and sticky at about 130 to 150° F