Replacement borosilicate glass valve assemblies for model R220 rotary evaporators. Both code -07 receiving flask bottom drain assembly and code -05 distribution head valve assembly feature PTFE valve stems with Kalrez o-rings. All bushing are PTFE and supplied with CAPFE o-rings. No frozen joint…

Borosilicate glass, lower distribution heads for model R220 rotary evaporators. Heads have improved designs by utilizing Ace-Threds for connections. Available either safety coated or in plain versions. All caps included. Inner ball joint has a CAPFE o-ring. End #15 Ace-Thred connects to the 3978…

Apparatus designed by James Velasco of U.S.D.A. and published in the J.O.A.C., Vol. 46, No. 5, Pages 252-255. Newly designed flask increases the efficiency and standardization of neutral oil determination by: permitting automatic transfer of weighed crude oil samples onto alumina columns;…

Basic MICRO/MINI-LAB KIT, Deluxe MICRO/MINI- LAB KIT's. Basic kit will do the majority of experiments in Organic Laboratory Tech-niques, Deluxe kits will do all experiments. Kits come with variety of components such as vials, condensers, tubes, the NEW Hickman-Hinkle spinning distillation…