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.
The foregoing instructions and information, which we have to a great extent borrowed from the United States Pharmacopoeia and National Dispensatory, are, in general, applicable in preparing extracts for the manufacture of carbonated saccharine beverages, and are very useful for the manufacturer's information. We therefore have reproduced them here. However, many modifications may take place in preparing extracts for the carbonator's purpose. He is particularly in want of fluid extracts, that are positively water-soluble, and this condition in practice will sometimes modify the percolation process. To each extract formula, appended later on, we therefore make practical suggestions.