Opaque black or white polypropylene PCR plates and optically clear cap closures are suitable for Real Time PCR applications. Plates are compatible with most thermal cyclers and are ideal for high throughput screening thermocycler applications. Smooth, thin, uniform well walls ensure accurate thermal transfer. Wells are slightly raised to accept optically clear strip caps or sealing films. All plates are autoclavable and certified free of Rnase, Dnase, and human DNA (lot-by-lot certificates available). Thin, flexible, easy-to-cut plates have a working capacity of 200uL per well. The half-skirted plate is easy to insert and extract. Skirted plates provide reduced plate distortion during high throughput screening and sit flat for greater stability.