cryo-EM copper grid, 400 mesh, 40 nm carbon, 4 um hole/2 um spacing
https://www.snapdx.org/shop/boc-2502-13-cryo-em-copper-grid-400-mesh-40-nm-carbon-4-um-hole-2-um-spacing-71724
https://www.snapdx.org/web/image/product.template/71724/image_1920?unique=0fa7945
cryo-EM copper grid, 400 mesh, 40 nm carbon, 4 um hole/2 um spacing : Size : 50 ea - Certification : Research Use Only - Storage : Ambient temperature .
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