294 



CENTRAL SCIENTIFIC CO., CHICAGO, U. S. A. 



No. 7052. 



No. 7056. 



No. 7060. 



7052. 



7053. 

 7056. 



7057. 

 7060. 



7061. 

 7062. 



GAS PIPETTE, Hempel's Double, for the Preparation of Pure Hydrogen, mounted on iron 



support $9.50 



GLASS PARTS only of No. 7052 7.50 



GAS PIPETTE, United Gas Improvement Co.'s Form, double, for cuprous chloride, mounted on 



iron support 15.00 



GLASS PARTS only of No. 7056 10.00 



GAS PIPETTE, Winkler's, for the determination of methane, with removable platinum spiral, 



mounted on a metal support with adjustable clamps 9.50 



GLASS PARTS only of No. 7060 6.50 



PLATINUM SPIRAL only of No. 7060, mounted in a double glass tube 1.75 



No. 7070. 



No. 7090. No. 7094. No. 7098. 



No. 7102. 



7070. 



7076. 



No. 7076. 



GAS PLIERS, see Pliers. 



GAS PRESSURE REGULATOR, Murrill's, for delivering gas to a burner at constant pressure. 

 Widely used with gas thermostatic regulators (See Nos. 13762 to 13786) 10.00 



GAS PRESSURE REGULATOR for oxygen tanks, see No. 6556. 



GAS REGULATORS, thermostatic, see Thermo-Regulators. 



GAS TIME REGULATOR, for shutting off supply of gas at any desired time. Consists of a 

 valve controlled by a lever, mounted on a specially constructed clock. Eegulator is placed in 

 the line between gas burner and supply tap. With %th inch passage through valve.. 5.50 

 7080. GAS TIPS, Aluminum, 6 foot Per dozen .60 



GAS WASHING BOTTLES 



7090. GAS WASHING BOTTLES, Allihn'S, double action, with ground in stoppers. 



Capacity, cc 



Each 



7094. GAS WASHING BOTTLES, Drechsel's high form, with tubes ground into neck. 



Capacity, cc 125 



Each 1.30 



7096 GAS WASHING BOTTLES, Drechsel's low form, with tubes ground into neck. 



Capacity, cc 125 250 500 



Each 1.35 1.55 2.20 



7098. GAS WASHING BOTTLES, Muencke's, wide mouth, with ground in tubes. Capacity, 

 250 cc 2.50 



7102. GAS WASHING BOTTLES, plain form, with rubber stopper and fittings. 



Capacity, cc 250 500 1000 



Each 40 .50 .65 



250 

 2.50 



250 

 1.50 



500 

 3.00 



500 

 2.00 



