shall be allowed for the analysis. Small carbide of from 4
to 15 mm. in size (and intermediate sizes) which yields less than 270
litres but not less than 250 litres (= 4.01 cubic feet per lb.) of crude
acetylene per kilogramme (with the above-stated 2 per cent. margin for
analysis) must be accepted by the buyer. The latter, however, is entitled
to make a proportionate deduction from the price and also to deduct the
increased freight charges to the destination or, if the latter is not
settled at the time when the transaction is completed, to the place of
delivery. Small carbide of from 4 to 15 mm. in size (and intermediate
sizes) which yields less than 250 litres per kilogramme need not be
accepted.
"Carbide shall only be considered fit for delivery if the proportion of
phosphoretted hydrogen in the crude acetylene does not amount to more
than 0.04 volume per cent. A margin of 0.01 volume per cent. shall be
allowed for the analysis for phosphoretted hydrogen. The whole of the
phosphorus compounds contained in the gas are to be calculated as
phosphoretted hydrogen.
"_Period for Complaints._
"An interval of four weeks from delivery shall be allowed for complaints
for consignments of 5000 kilogrammes (= 5 tons) and over, and an interval
of two weeks for smaller consignments.
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