US$ 447.50
Wooden-frame abacus on a 13
Modular inclined-plane kit with a frictionless car
Translucent HDPE reagent bottles hold 250mL each in a 12-pack with wide-mouth openings and polypropylene caps for powders and viscous samples
and fish casts in one classroom display
zinc nitrate
Tris Base Tromethamine Primary Amine Buffer, 10kg Size_16 Inch Wooden-frame abacus on a 13Bulk 10kg of Tris base (tromethamine), the workhorse primary amine buffer for biology, biochemistry, and molecular biology buffer preparation across pH 7 9 at production scale.
US$ 447.50
US$ 299.50
US$ 324.50
US$ 15.60