A Unitized Filtration Stand Setups for common laboratory procedures may be unitized semipermanently to (1) facilitate manipulation by the student. (2) reduce breakage, (3) cut handling time a t the stockroom, and (4) eliminate need for certain only o&sionally used items in student lockers. One example of such equipment is shown in the figure. Our storkroom has constructed 12 of these assemblies for checkout into whatever laboratories vacuum filtration is to be done on a given day. The base, measuring 12 X 8 X 13h in., is cut from a discarded solid door and finished in black epoxy paint. The rod, 8 in. long and 'h in. in diameter, is secured to the wood by a base plate. Holes for the 500-ml flask and 250-ml wide mouth bottle (trap) are, respectively, 4318 and 21h in. in diameter, and 3ir in. deep. Standing on the laboratory bench, the assembly is heavy enough to resist sliding and is virtually tip-proof.
Las Angeles Valley College VanNuys, California 91401
Joseph Nordmann Taira Shinohara
Volume 53.Number 1, January 1976 / 45
