Certificates of analysis and other memoranda concerning laboratory service and the reporting of results should have the following requirements:

(a) Certificates of analysis shall be on standard printed forms approved by the Deputy Administrator;

(b) Shall be printed in English;

(c) Shall have results typewritten, computer generated, or handwritten in ink and shall be clearly legible;

(d) Shall show the results of laboratory tests in a uniform, accurate, and concise manner with abbreviations identified on the form;

(e) Shall show the information required by §§ 91.26 through 91.29; and

(f) Show only such other information and statements of fact as are provided in the instructions authorized by the Deputy Administrator.