Diffusion Caps with Membrane, Pkg 9
Perkin Elmer Diffusion Caps with Membrane, Pkg 10; For passive air sampling to ensure correct diffusion path length. Same as standard diffusion caps but with a silicone membrane. - PE
Perkin Elmer Diffusion Caps with Membrane, Pkg 10; For passive air sampling to ensure correct diffusion path length. Same as standard diffusion caps but with a silicone membrane. - PE