BAIRD (SclATLOCK (LONDON) LTD. 



Merck's Pyrogallic Acid. 



%>/ 

 S52 



MERCK'S PYROGALLIC ACID 



Produces the highest density to be desired in a photographic plate. It gives at the same time the 

 finest detail required for the most perfect negative (in high lights as well as in shadows and half-tones). 



Under ordinary precautions it retains all its superior qualities undiminished for an indefinite 

 length of time. 



For i 

 lid. 



PRICES. 



8 



16 

 lOd. 



i Ib. tins, 5/6 each ; i Ib. tins, 10/6 each. 

 Tins Free. 



32 I oz. tins 

 per oz. 



'YROGALLIC ACID. Concentrated Crystal Form. 



i Ib. occupying same space as i oz. resublimed. 

 In i 8 16 



9d. 8d. 8d. 



Bottles Free. 



32 i oz. bottles. 

 7Ad. per oz. 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



1245 



