Samples of rosin for grading.

CFR · 2024-01-01 · US · Title 7

Samples of rosin for grading shall be approximately cubical in shape, and shall be seven-eighths inch thick in the direction through which they are viewed or graded. Samples may be taken by any of the following methods: (a) By cutting or cleaving the same from a lump of the rosin removed from the solid mass in the barrel or drum, the top side of which lump shall come from not less than 4 inches below the surface of the rosin. (b) By placing a tin mold of suitable design inside the barrel or drum through an opening in the side, the center of which opening is approximately 9 inches from the top or 12 inches from the bottom so that when the container is filled, the rosin within the mold will have come from a position not less than 4 inches below the surface of the rosin. The mold thus (c) By suspending in the barrel or drum of molten rosin a clean tinplate mold, (d) By withdrawing a quantity of molten rosin from a full container of 150 pounds content or less, pouring the rosin into a suitable mold, and allowing it to cool and solidify slowly: (e) By withdrawing a quantity of molten rosin from a full drum that has been filled after a preliminary cooling period, pouring the rosin into a suitable mold, and allowing it to cool and solidify slowly: (f) By collecting in a suitable vessel a quantity of molten rosin from each successive batch or charge as it is delivered into a tank car, pouring the respective quantities of rosin into suitable molds, and allowing them to cool and solidi

official document · source cfr-2024 · id 7:§ 160.19