US$ 39.99
Folds flat into a metal pocket frame and opens into a 5x linen tester with an integrated measurement scale
Made from quality borosilicate glass
STOPPER & STOPCOCK || Fitted with an interchangeable 24/29 plastic stopper and glass key stopcock
glass working
Designed for desk-scale refraction and dispersion work
562-Piece Extra-Large Molecular Model Set, 292 Atoms + 270 Bonds Base Shape_Rectangular Folds flat into a metalLargest 562 piece molecular model set with 292 atoms and 270 bonds plus a bond removal tool, covering everything from water and CO2 through alkenes, amino acids, and fatty acids.
US$ 39.99
US$ 35.50
US$ 50.00
US$ 58.00
US$ 22.99
US$ 284.50