Laboratory Glass & Scientific Equip

A collection of laboratory glassware and scientific demonstration equipment. The grouping features a glass electroscope used for detecting electrical charge, constructed from a clear glass jar with a metal rod passing through a stopper. The rod is topped with a dark sphere and terminates in a flat paddle holding a thin foil leaf. An adhesive paper label on the front is a blue and red oval reading CAMBOSCO SCIENTIFIC COMPANY BOSTON, MASS. U.S.A. with a logo of a bird silhouette to the left. A large heavy-walled filtering flask made of borosilicate glass features a side-arm vacuum connection and a ground glass neck joint. White printed markings on the side read 6000 ml +/- 5% near the top and 6000 ml above a circular logo containing the name PYREX in a rectangular frame with a registered trademark symbol and U.S.A. below. Further text reads No. 4980 and STOPPER No. 10 with graduations for 5000 and 4000 ml. A scientific demonstration apparatus consists of three open-ended clear glass cylinders mounted vertically into a dark-stained wood wedge-shaped base. A small square white adhesive label is affixed to the lower corner of the base with illegible handwritten characters. A gas washing bottle features a tall cylindrical body with an integrated hexagonal base, containing an internal glass tube and topped with a frosted ground glass male joint. A long-neck boiling flask completes the set, featuring a pear-shaped bulb and a finished rim.

Buyer's Premium
24%