The best method for the making of such a determination is probably the burning of a definite amount of resublimed naphthaline whose heat of combustion is known. From Wordnik.com. [Steam, Its Generation and Use] Reference
The standard as calculated from an experiment with pure silver should be checked by another using pure resublimed white arsenic. From Wordnik.com. [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference
(1) Solution of 25 grammes iodine in 500 c.c. absolute alcohol; (2) solution of 30 grammes mercuric chloride in 500 c.c. absolute alcohol, these two solutions being mixed together and allowed to stand at least twelve hours before use; (3) a freshly prepared 10 per cent. aqueous solution of potassium iodide; and (4) a N/10 solution of sodium thiosulphate, standardised just prior to use by titrating a weighed quantity of resublimed iodine dissolved in potassium iodide solution. From Wordnik.com. [The Handbook of Soap Manufacture] Reference
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