Graingrinlab BW Alkaline Fixer is a virtually odorless, non-hardening fixer ideal for use with b amp;w film and paper. This all-purpose fixer is designed to expedite fixing and washing speed, whilst maximizing image quality and permanence. Fiber based prints can be washed to the highest standard with less washing time than other fixers, significantly reducing water wastage. pH is buffered at about 7 when mixed fresh, and is designed to resist acid stop solution carryover. Suitable for use with all b amp;w materials, including pyro and staining-type developers. Storage and Capacity Unopened Graingrinlab Alkaline Fixer should be kept in cool conditions. The products have a virtually indenite shelf life. the solution should be kept in tightly closed glass, PET(PETE) or Hdpe containers.