Set of 12 impermeable membranes that are shaped exactly like a piece of filter paper. Place these membranes behind your filter paper prior to freezing. These membranes will prevent your protein from being absorbed onto the factory sponge and keep any contaminants on the sponge away from your grids. These membranes can be washed with soap and water and disinfected with ethanol. These membranes are critical for BSL work and make disinfecting protocols much simpler and more effective. This set of 12 allows for 6 pairs to be used exclusively for particular experiments.
For those with specific requirements, ACLAR 33C membranes are also available.