Each grade certificate issued under the act by a grader shall be in a form approved for the purpose by the Department, and shall embody within its written or printed terms: (a) The caption “United States Warehouse Act, Wool Grade Certificate”; (b) whether it is an original, a duplicate, or other copy; (c) the name and location of the warehouse in which the wool is or is to be stored; (d) the date of the certificate; (e) the location of the wool at the time of grading; (f) the designation of the lot from which the wool was taken; (g) if the wool is not to be commingled, its identification in accordance with § 738.34; (h) The consecutive number of the certificate; (i) the pounds of each grade of wool covered by the certificate; (j) a blank space designated for the purpose in which, if the identity of the wool is to be preserved, a careful estimate of the shrinkage of the wool may be stated or in which, if the wool is to be commingled, a careful estimate of the shrinkage of the wool shall be stated; (k) the grade of the wool as determined by such grader in accordance with §§ 738.64 through 738.67; (l) the lot or pile number assigned to the grade; (m) the kind of wool (n) that the certificate is issued by a licensed grader under the United States Warehouse Act and the regulations thereunder; and (o) the signature of the grader who graded the wool. In addition the grade certificate may include any other matter not inconsistent with the Act or the regulations in this part, provided the approval of the Service is first secured.