Especially for use in ligand receptor binding, Filtermat B is similar to Filtermat A (a glassfibre filtermat printed on both sides) but twice as thick. It is possible to load more material onto this filter and, if long presoak times are required, it is strong enough for easy handling when wet.The filtermat is a 96-position nylon membrane with a printed pattern, intended for use with a manifold for RNA/DNA hybridization assays.