Test Tube Spice Rack--Get Experimental with Your Cooking! This stylish spice holder features a test tube rack made from pine and treated to be fluid resistant. A 2-tier test-tube rack that is ready for the lab, but does a dandy job in the kitchen. And comes complete with (6) large, 25mm x 150mm, glass test tubes and stoppers--great for bulk spices, and (6) smaller, 18mm x 150mm, glass test tubes and stoppers for spices in short supply (looking at you, Saffron). A perfect excuse to broaden your horizons, and get more experimental with your cooking.