产品信息：(a) Lacey Formvar Stabilized with Carbon: A Lacey Formvar film with the lacey structure enforced by a heavy coating of carbon. Holes are completely open.

 产品规格和包装：(b) Lacey Carbon Type-A: A Lacey carbon film with a removable Formvar backing on the opposite side of the grid. When the Formvar is removed, by dipping in solvent, the Lacey carbon film remains. These films are stable under all EM operating conditions and for use where the presence of Formvar can not be tolerated. Pure Lacey Carbon is more delicate than those with Formvar backing and require more careful handling during specimen preparation. Holes are completely open.