Enforcement Rules of Feed Control Act Article 3

The competent authorities should write out receipts for the samples taken in accordance with the prescription in Article 22, Paragraph 1 of this Act after they accompanied by manufacturers or users seal those samples for keeping.The quantity of the samples needed for inspection taken as prescribed in Article 22, Paragraph 2 of this Act should be no more than four items, with each weighing no more than 300 g.The identification documents as prescribed in Article 22, Paragraph 3 of this Act are verification certificate issued by the competent authorities.
中文原文 飼料管理法施行細則第3條
主管機關依本法第二十二條第一項規定抽取之樣品,應會同廠商或使用戶封緘後,掣給收據。
本法第二十二條第二項所定足供檢驗之樣品數量,不得超過四份,每份以三百公克為限。
本法第二十二條第三項所定身分證明文件,為主管機關製發之查驗證。

English translation for reference only; the Chinese text prevails. Not legal advice.