BAIRD &TATLOCK (LONDON) LTD. 



5921 Hoffmann's Apparatus for the decomposition of water, as No. 5918 with tubes each 



graduated into 50 cubic centimetres 



5922 Hoffman's Apparatus, as above, with metal stand and double terminals 



5923 Hoffman's Apparatus, as above, with wooden stand and 



16 



186 



130 



5924 



5925 



5926-5928 



5924 Apparatus, small U shape, for decomposition of water, with platinum electrodes and 



graduated tubes 10 cubic centimetres 



5925 Apparatus, small, for decomposition of water, with graduated tubes and platinum 



electrodes in basin on wooden stand 



5926 Apparatus, for the decomposition of hydrochloric acid, with movable carbon electrodes. 



The tubes should be filled with a saturated solution of a salt containing 15 per cent, 

 hydrochloric acid . . . . . . . . . . . . . . . . 12 



5927 Hoffman's Apparatus, as above, with metal stand and double terminals . . . . 140 



5928 Hoffman's Apparatus, as above, with wooden stand and . . . . 18 6 



5929 Apparatus, for hydrochloric acid as No. 5926, graduated into cubic centimetres . . 15 6 



5930 Apparatus, as No. 5929, with metal stand and double terminals . . . . . . 176 



5931 Apparatus, as No. 5929, with wooden stand and . . . . ..120 



5932 Apparatus for the decomposition of ammonia. The same form as last, with movable carbon 



electrodes. The tubes should be filled with a saturated solution of a salt containing 15 



per cent, of ammonia . . . . . . . . . . . . . . . . 12 



5933 Apparatus, as above, with metal stand and double terminals .. .. .. .. 140 



5934 Apparatus, as above, with wooden stand and ,, . . . . . . 18 6 



The three apparatus (Figs. 5918, 5926, 5932) may be connected together for the simultaneous 

 electrolysis of hydrochloric acid, water, and ammonia. 



N.B. Care should be taken after the battery is connected with the electrodes to leave the stopcocks 

 open for a few minutes before proceeding to collect the gases. 



5935 Platinum Electrodes, on rubber corks, to suit Apparatus 5926 and 5932 when used for 



decomposition of water . . . . . . . . . . . . per pair 086 



5936 Carbon Electrodes, with rubber corks and binding screws, for Apparatus Nos. 5926 and 



5932 . . . . . . . . per pair 036 





CROSS STREET- HATTOTST GARDETST E-C 



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