This is 10 grams of Agar Powder. Agar is a growth medium used to culture microorganisms in laboratory situations.
These are blue solid rubber stoppers are made of excellent grade rubber and sold in one pound bags.
These burner Tripods have a cast iron support ring with black enamel, acid resistant finish, detachable nickel-plated steel legs angled outward for better stability.
These Tubular Spring Scales are calibrated in both Grams and Newtons with transparent bodies and each size is color coded for identification.