LABORATORY SUPPLIES AND CHEMICALS 



133 





2612 



2616 



2618 



2593 ELECTROLYSIS APPARATUS (Osborne Form), for study of conductiv- 

 ity of liquids, ionization, electro-plating and electrolysis of water. 

 This apparatus has been constructed to supply the urgent de- 

 mand for a simple, substantial form of electrolytic apparatus 

 that can be used to demonstrate the principles involved in the 

 theory of electrolytic dissociation. It consists of an outer U 

 tube with graduated sliding tubes, shot valves, glass plug and 

 platinum electrodes, which are easily replaced by carbon or cop- 

 per electrodes. It allows immediate change qf liquids, permits 

 the introduction of litmus, methyl orange, cloth for bleaching 

 or any other indicator, is readily cleaned, requires least amount 

 of liquid to fill it. Complete as illustrated, with instruction for 

 use $ 7.50 



2595 SUPPORT for No. 2593, with binding posts 3.50 



2597 ELECTROLYSIS OF WATER APPARATUS, Hoffman's improved form 

 with graduated tubes, glass stopcocks and removable platinum 

 electrodes -. 10.00 



2599 SUPPORT for either No. 2591, No. 2597 or No. 2601, with binding posts.. . 3.50 



2601 ELECTROLYSIS OF WATER APPARATUS, same as No. 2597 but 



without glass stopcocks 7.50 



2603 CARBON ELECTRODES, two rubber stoppers fitted with carbon elec- 

 trodes and connectors, adapted to Nos. 2591-2601 inclusive 75 



2605 COPPER ELECTRODES, two rubber stoppers fitted with copper elec- 

 trodes and connectors, adapted to Nos. 2591-2601 inclusive 75 



2607 PLATINUM ELECTRODES, two rubber stoppers with platinum elec- 

 trodes and connectors, adapted to Nos. 2591-2601 inclusive 2.50 



3612 EUDIOMETER, Bunsen's, with platinum electrodes. 



Capacity 55 cc. in 1-5 100 cc. in 1-5 



Each $2.50 3.50 



2614 EUDIOMETER, Bunsen's, graduated into millimeters, with platinum electrodes. 



Millimeters , 300 500 



Each $2.50 $3.50 



2616 EUDIOMETER, Mitchterlich's new style, with stopcock and platinum electrodes. 



Size 50 cc. in 1-5 100 cc. in 1-5 400 mm. 



Each $3.00 4.00 5.00 



2618 EUDIOMETER, Ure's graduated in cc. U form, with platinum electrodes 



50 cc. in 1-5 $3.50 



2620 EUDIOMETER. Ure's improved form. The bend is made of heavy rubber 

 tubing so that the instrument can be straightened out for con- 

 venience in filling. 50 cc. in 1-5 5.00 



