Indexed card holds 100, 2.3 mm or 3.05 mm grids in coded locations. Accompanying record card is used to record identity of samples. Device is anti-static to prevent handling problems due to repulsion or attraction.. Material: Plastic (anti-static). Anti-Static. Sold in each. . . Sigma-Aldrich G6276-1EA Grid Storage Box, Anti-Static, Plastic. Country of Origin : United States. Part Number : 1191W75EA. Pack of : 1.