BAIRD &.WLOCK (LONDON) LTD. 



Merck's Guaranteed Reagents (continued}. 



Per Per 



oz. 4 oz. 



bott. bott. 



s. d. s. (i. 



Iron Ammon. Sulphate, extra pure . . 

 Sesquichloride, cryst. .... 

 Lacmoid Scales, extra pure 

 Lead Acetate, extra pure, Ph. Helv. IV. 



Peroxide, extra pure, free from Manganese 

 Litmus, extra pure 

 Magnesium Carbonate 



Chloride, extra pure 



Oxide (calcined Magnesia), free from Sulphuric Acid 

 Manganese Peroxide, Pryolusite abt. 90% 

 Mercury Metal, extra pure redistilled 

 ,, in nickel bottle 

 ,, Bichloride, extra pure 



Metadiamidobenzol Hydrochlor., pure (Phenylendiamine Hydrochlor.) . . 

 Naphthylamin, alpha, extra pure 

 Nitrophenol, ortho 

 para 



Perhydrol (H 2 O.j chem. pure Merck = 100 volumes), original bottles in tins 



Phenolphthalein pure 



Phenylhydrazin, extra pure, in original g.s. bottles of 25, 50 and 100 grammes 



Phloroglucin, extra pure, free from Diresorcin 

 Phloroglucinol, for wood pulp 

 Potassium Antimoniate, pure 



,, Bichromate extra pure cryst. 



,, Bisulphate, ,, 



,, Bromide, ,, ,, 



Chromate, yellow, extra pure 

 ,, Cyanide, extra pure 

 ,, Ferricyanide, extra pure 



Ferrocyanide ,, 



,, ,, ,, powder 



Hydroxide, 



Iodide, 

 Nitrite, 

 Permanganate, pure cryst. 



extra pure, free from Sulphuric Acid 

 ,, Sulphate, extra pure cryst. 



Sulphocyanide, extra pure cryst. 



Potassium and Sodium Tartrate (Tartarus Natronatus) 

 Resorcin, resublimed, perfectly white 

 Silver Nitrate, extra pure cryst. 



,, Nitrite, extra pure 

 Sodium Biborate 



Bicarbonate, extra pure powd. 

 Carbonate, chem. pure anhyd. 

 Chloride, chem. pure 

 >, ,, extra pure, fused 



Per 

 Jib. 



bott. 

 s. d. 

 , I O 

 I O 



i 96 7 13 o 



2243 

 i i 3 ii ; 7 8 



r 5 



10 2 II 56 



i 3 



CROSS STREET HATTOTsT GARDEN. E- C 



