[Illustration: FIG. 23.--SMALL-SCALE APPARATUS FOR DETERMINING YIELD OF
GAS FROM CARBIDE.]
Cedercreutz has carried out trials to show the difference between the
yields found from large and small carbide taken from the same drum. One
sample consisted of the dust and smalls up to about 3/5 inch in size,
while the other contained large carbide as well as the small. The latter
sample was broken to the same size as the former for the analysis. Tests
were made both with a large testing apparatus, such as that shown in Fig.
22, and with a small laboratory apparatus, such as that shown in Fig. 23.
The dust was screened off for the tests made in the large apparatus. Two
sets of testings were made on different lots of carbide, distinguished
below as "A" and "B," and about 80 grammes wore taken for each
determination in the laboratory apparatus, and 500 grammes in the large
apparatus. The results are stated in litres (at normal temperature and
pressure) per kilogramme of carbide.
___________________________________________________________________
| | | |
| | "A" | "B" |
|_____________________________________________________|______|______|
| | | |
| Lot |Litres|Litres|
| Small carbide, unscreened, in laboratory \ (1) | 276 | 267 |
| apparatus .
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