Henley's Twentieth Century Formulas, Recipes and Processes

by Unknown

For 1 per cent, or 1 in 100 solution, use 87 ¹/₂ grains of the med­i­ca­ment.

For 2 per cent, or 1 in 50 solution, use 175 grains of the med­i­ca­ment.

For 4 per cent, or 1 in 25 solution, use 350 grains of the med­i­ca­ment.

For 5 per cent, or 1 in 20 solution, use 437 ¹/₂ grains of the med­i­ca­ment.

For 10 per cent, or 1 in 10 solution, use 875 grains of the med­i­ca­ment.

To make smaller quantities of any solution, use less water and reduce the med­i­ca­ment in proportion to the amount of water employed; thus ¹/₂ imperial pint of a 1 per cent solution will require 43 ³/₄ grains of the med­i­ca­ment.

Pressure Table.

Water, gallons	Soda Bicar., Av. ounces	Acid Sulph., Av. ounces
10	86	50
20	123	71
30	161	93
40	198	118
50	236	138

Water, gallons	Soda Bicar., Av. ounces	Acid Sulph., Av. ounces
10	96	56
20	134	73
30	171	100
40	209	122
50	246	144

If marble dust be used, reckon at the rate of 18 ounces hot water for use.