X-Pierce™ films provide temporary protection from contamination and evaporation for samples in 96-well plates. A precut "X" over each well creates four flaps that are easily pushed downward by a robotic probe or pipette tip to allow sample access without coring or adhesive fouling. The flaps return to their original position after sampling for continued protection. For long-term sample protection after sampling, a continuous film should be applied as a second layer. Dimensions are 79.4 x 145.5 mm. For temperatures from -40°C to +90°C. Certified RNase, DNase, and nucleic acid free.