5.4×5.4 mm square Search× Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Dual-Scale Micro+Nanoporous Membrane Chips $600.00 Gold-Coated Microslit Membrane Chips Microporous Membrane Chips $550.00 Microslit Membrane Chips $500.00 – $550.00 Nanoporous Membrane Chips $550.00