Reagents, Enviro, Soda Lime, Refillable, 500 g,+100 MESH.. The refillable Soda Lime is granular, +100 mesh, 500 grams of A.C.S. Reagent Grade material, >4% Sodium Hydroxide and a variable mixture of sodium hydroxide and calcium oxide/hydroxide, drying loss of = 7%, and CO2 absorption capacity >/= 19%. Used with all Shimadzu TOC units. User must supply refillable 500 gram container.