US$ 5999.50
Pack of 10 ASTM-compliant natural bark cork stoppers in Size 20 provides sealing for laboratory vessels and chemistry apparatus
ovary chambers
assembling quickly for classroom chemistry storage and disassembling flat for easy cleaning
Top ground joint has a 29/32 size socket
Twelve-inch friction rod machined half from ebonite and half from brass
Caffeine Molecule Model Kit Category_Demonstrations Pack of 10 ASTM-compliant naturalCaffeine molecule build kit supplying every atom and bond needed to construct CHNO from scratch, arriving disassembled with a diagrammed assembly guide.
US$ 5999.50
US$ 18.95
US$ 17.95