each from the
top, centre, and bottom of the drum. The carbide shall be carefully
broken up into small pieces, due care being taken to avoid exposure to
the air as much as possible, carefully screened and tested for gas yield
by decomposing it in water, previously thoroughly saturated by exposure
to acetylene for a period of not less than 48 hours.
"12. Carbide which, when properly decomposed, yields acetylene containing
from all phosphorus compounds therein more than .05 per cent. by volume
of phosphoretted hydrogen, may be refused by the buyer, and any carbide
found to contain more than this figure, with a latitude of .01 per cent.
for the analysis, shall lie at the risk and expense of the seller in the
manner described in paragraph 2.
"The rules mentioned in paragraph 7 shall apply as regards the carriage
and costs of analysis; in other words, the buyer shall pay these costs if
the figure is below 0.05 per cent. plus 0.01 per cent., and the seller if
the figure is above 0.05 per cent. plus 0.01 per cent.
"The sampling shall take place in the manner prescribed in paragraphs 5
and 11, and the analytical examination shall be effected in the manner
prescribed by the Association and obtainable upon application to the
Secretary.
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