Chromatrap is a business unit of Porvair Sciences Ltd. The product range includes chromatin immune-precipitation kits, enzymatic shearing kits and DNA clean-up kits. The Chromatrap solid-state ChIP assays are quicker, more sensitive and require less input chromatin than other methods, due to the powerful inert filter in Chromatrap, which selectively binds the DNA of interest, whilst rejecting all other nuclear debris, unbound antibody and buffer components. The result is a quick, easy and sensitive protocol for producing high-purity DNA fragments which may be used for RT-PCR or sequencing. Chromatrap has research laboratories at Swansea University and R&D together with production facilities in the Porvair Sciences works at Wrexham, Wales.