Polypropylene dome shaped caps for TempAssure 0.2 mL PCR tubes and TempPlate 0.2 mL PCR plates. Choose 8-cap or 12-cap in natural or assorted colors. Assorted colors include blue, green, red, violet, and yellow. Certified free of detectable RNase, DNase, DNA, and PCR inhibitors. Tested pyrogen free. Made in the USA.