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.
For convenience the carbonator may prepare such a saccharine solution as a substitute for syrup in advance, keep it in barrels, protected only from dust, for an indefinite time, as it will never ferment and keeps its properties unchanged. Whenever the bottler is then in need of one, two or five gallons of syrup, just draw off the same quantity of this solution and the substitute is ready. All the trouble of fermentation that we meet with in syrups in storage, even with fresh ones, is avoided. As saccharine is itself a powerful preservative we need no more salicylic acid, thymol, etc. The sweetening and preserving is combined and serves both purposes.
We have expressed rather enthusiastically our ideas concerning this new product of progressive chemistry in its applications to the manufacture of carbonated saccharine beverages. Why we have done so was, first, on account of the satisfactory results we have achieved, but also in regard to the favorable reports we have read from high medical and chemical authorities; and, furthermore, as an old "coal tar" (saccharine is derived from coal tar), having worked in the "coal-tar industry," we are indeed confident in the value of its products, which all rank high in chemistry. We feel convinced that when saccharine is prepared in a pure and unadulterated state, kept free from all admixtures, of which soda will probably be the principal adulterant, it will have a great future, and in fact revolutionize the bottlers' trade. But, before we conclude this Chapter, we must append our "alas" The manufacturers and the importers will, at least we hope, stand to their flag, and sell nothing but the true saccharine; but we fear that this, at present somewhat expensive article, will undergo extreme adulterations by every dealer through whose hands or store it has to go, and consequently its properties lessened, and difficulties raised in the ratio of its adulteration. The price of saccharine is at present $15 per pound and $1.10 per ounce, with liberal discount for large quantities.