This section is from the book "A Treatise On Beverages or The Complete Practical Bottler", by Charles Herman Sulz. Also available from Amazon: A Treatise On Beverages.
As saccharine is easily soluble in water when combined with bicarbonate of soda in the proportion of 1 part of saccharine and 1/2 part of bicarbonate, it is convenient to have such powders ready for use in various strengths. Mix both powders in a mortar thoroughly and keep each "strength," which we advise to number, separately enclosed in a paper.
No. 1 Powder: 1.63 grains of saccharine and 0.82 grain of bic. soda equal to 1 oz. of sugar. No. 2 Powder: 3.25 grains of saccharine and 1.63 grains of bic. soda equal to 2 ozs. of sugar. No. 3 Powder: 6.5 grains of saccharine and 3.25 grains of bic. soda equal to 4 ozs. of sugar No. 4 Powder: 13.0 grains of saccharine and 6.5 grains of bic. soda equal to 8 ozs. of sugar. No. 5 Powder 26.0 grains of saccharine and 13.0 grains of bic. soda equal to 1 lb. of sugar. No. 6 Powder 130 grains of saccharine and 65 grains of bic. soda equal to 5 lbs. of sugar. No. 7 Powder 260 grains of saccharine and 130 grains of bic. soda equal to 10 lbs. of sugar. No. 8 Powder 520 grains (1 oz. 40 gr.) of saccharine and 260 grains of bic.
(2 oz. 5 dr. 40 gr.) of bic. soda equal to 100 lbs. of sugar.
These powders are easily soluble in hot water, and a saccharine solution of any desired strength can be prepared at any time. Of saccharine alone, without the combination of bicarbonate of soda, only 45 grains are soluble in water at ordinary temperature.