High chimney wells help prevent cross contamination and are easy to seal with strip caps or mats. 48 wells in a 6 x 8 configuration. Polypropylene plates provide rapid, even heat transfer for reliable amplifications. Certified free of detectable RNase, DNase, DNA, and PCR inhibitors. Tested pyrogen free. Non-skirted. One box contains 10 sleeves of 2 (20 total).For maximum protection against cross-contamination, see our TipOne® filter tips.