13 
ALWAYS THE SAME 
Cooper's Powder Dip does not vary in strength or 
quality. ‘It would be impossible to find the least variation 
in the contents of any of the millions of packets of 
Cooper's Dip in any part of the world. Analysts of the 
highest rank have analysed it again and again, and testified 
to its constancy both in chemical composition and 
mechanical condition. Thisalmost unique recommendation 
is the outcome of certain advantages which the Proprietors 
of Cooper’s Dip have acquired. Finding by experience 
the great variation in the quality of the materials used in 
Dip manufacture obtainable on the market, they secured 
, their own mines. This advantage enables them to select 
the same uniformly high grade quality of minerals in the 
manufacture of Cooper's Dip. Many other makers depend 
upon the open anid variable market. 
In 1920 the Proprietors of Cooper's Dip established up 
to date Chemical Works on the Parramatta River, Sydney, 
N.S.W. They equipped it with plant taken from one of 
their English Works, and they sent out their Chemistsand 
trained Experts to take charge of the manufacture of 
Cooper's Dip in the Sydney Works. 
The raw materials used in the Sydney Works come from 
the same sources, and are of the same quality asis the case 
with the Cooper's Dip manufactured in the Berkhamsted 
Works, England. Arsenic is one of the principal active 
agents in Cooper's Dip, and the only arsenic used in the 
Sydney Works is that which is produced at the Cooper 
Arsenic Mine and Refinery. : 
The Cooper's Dip manufactured at the Sydney Works is 
therefore identical in every respect with the Cooper's Dip 
that has been manufactured at the Berkhamsted Works 
during thé past 80 years. 
Ц 
It is therefore аз certain as anything in this world сап 
be that Cooper's Dip, when used according to plain 
О give the same great results every time it 
is used. Any result short of absolute success must arise 
from some deficiency in the method of use, from 
circumstances attending the dipping, or from variation in 
degree of pest infestation—due to climatic conditions. 
