6 square
inches of purifying material is required. In the course of Keppeler's
research upon different purifying materials it is shown that 400 grammes
of heratol, 360 grammes of frankoline, 250 grammes of acagine, and 230
grammes of puratylene each occupy a space of 500 cubic centimetres when
loosely loaded into a purifying vessel, and from these data, the
following table has been calculated:
__________________________________________________________
| | | | |
| | Weight | Weight | Cubic Inches |
| | per Gallon | per Cubic Foot | Occupied |
| | in Lbs. | in Lbs. | per Lb. |
|_____________|____________|________________|______________|
| | | | |
| Water | 10.0 | 62.321 | 27.73 |
| Heratol | 8.0 | 49.86 | 31.63 |
| Frankoline | 7.2 | 41.87 | 38.21 |
| Acagine | 6.0 | 31.16 | 55.16 |
| Puratylene | 4.6 | 28.67 | 60.28 |
|_____________|____________|________________|______________|
As regards the minimum weight of material required, data have been given
by Pfleger for use with puratylene.
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