(g) Tolerances for certification of officially drawn samples. When certifying samples that have been officially drawn and which represent a specific lot of refiners' sirup, the grade for such lot will be determined by averaging the factors of all the samples representing the Factors U.S. Extra Std. or U.S. Standard or U.S. Grade D refiners' sirup Not less than 76 percent Not less than 78 Not more than 10 No darker than RS Not less than 70 percent. Not more than 14 percent. No color limit. lot: Provided, That not more than % of such samples fail to meet the requirements of the grade specifications set forth in Table I: And further provided, That each of the samples which represent a specific lot of refiners' sirup meet the limiting specifications set forth in Table II of this paragraph. TABLE II-TABLE OF LIMITING SPECIFICATIONS FOR REFINERS' SIRUP (b) Preparation of RS color standards (1) RS Color Standard No. 1. Dilute 10 milliliters of the RS stock solution to 100 milliliters with 10 percent hydrochloric acid solution. (2) RS Color Standard No. 2. Dilute 18 milliliters of the RS stock solution to 100 milliliters with 10 percent hydrochloric acid solution. (3) RS Color Standard No. 3. Dilute 50 milliliters of RS stock solution to 100 milliliters with 10 percent hydrochloric acid solution. § 44.46 Use of RS color standards in determining color factor. (a) Containers required. The containers needed to perform the visual color comparison test set forth in paragraph (c) of this section are: (1) A container for a sample of refiners' sirup for which the color factor is to be determined (such container hereinafter called "sample container"); and (2) Containers for the respective RS color standards. (b) Description of containers. The sample container is made of colorless and transparent glass or plastic material and is of such shape and construction as to provide a flat 8-inch thickness of the sample to be viewed. The container for each RS color standard is a colorless and transparent 2-ounce French square water sample bottle having outside base dimensions of 16 inches by 116 inches. (c) Visual comparison test. A sample of refiners' sirup is compared in the following manner with the RS color standards to determine whether the sample is darker than one or more of such color standards: (1) Place each of the RS Color Standards Nos. 1, 2, and 3 in separate 2-ounce French square water sample bottles; (2) Place a sample of the refiners' sirup in a sample container; and (3) In order to determine whether the sample is darker than one or more of the RS color standards, visually compare the sample with each of the color standards by looking through them at a light-colored background in diffuse light. The sample is viewed through its 8-inch thickness; and each RS color standard is viewed at right angles to one of the sides of its container. FINDING AIDS In addition to the following finding aids a subject index to the entire Code of Federal Regulations is published separately and revised annually. List of Current CFR Volumes List of Superseded CFR Volumes Table of CFR Titles and Chapters Alphabetical List of CFR Subtitles and Chapters List of Sections Affected List of Current CFR Volumes The following list shows all Code of Federal Regulations volumes and supplements 1 For volumes containing text of Presidential Documents see Explanation in 1966 Sup- 2 Revised annually. |