In order to determine the dist. ratio, an apparatus was designated as Fig. 1. Its original plan was showed on A. 0. A. C. Fig. 32, p. 298 (1951), but details were varied as follows.
1. C0
2-free boiling water in the steamer must be used from 2
l.
2. The round bottomed dist. flask is non side arm flask, and fit a trap up the top of it.
3. Tube length of the condenser is 25-30cm.
Some examinations showed that the dist. ratio is influenced by the dirt. speed, the dirt. volume and the amount of H
2S0
4 vol. and sampling wt., so their conditions were determined as follows.
1. The dist. speed influences the dist. ratio in inverse proportionaly, therefore it must be adjusted to 50cc./8 min. by the variable resistance.
2. Total volume of the content in the dist. flask influences the dirt. ratio in direct propor-tionaly, therefore 5% H
2SO
4 and sample must be taken 100cc., 20g.
3. concentration of the additional H
2SO
4 influences the dist. ratio slightly, and the sampling wt. not influences the ratio. But it is desired to keep constantly the total volume of the content in the dist. flask, H
2SO
4 must be 100cc. 5% solution and the minced-meat is sampled 20g. usualy.
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