8.—(1) In relation to the sampling of citrus fruit for the purpose of analysis to establish the presence in or absence from that fruit of biphenyl, 2-hydroxybiphenyl or sodium biphenyl-2-yl oxide and the quantity of any such substance present—
(a)the power of a sampling officer or of an officer under section 28 or 32 respectively of the Act to procure samples shall be exercised in accordance with Part I of Schedule 4;
(b)the duty of a sampling officer or of an officer under section 30 or 32 respectively of the Act to seal or fasten up each part of the sample shall be performed in accordance with paragraph 1 of Part II of Schedule 4;
(c)the duty of a sampling officer or of an officer under section 30 or 32 respectively of the Act to submit one part of the sample for analysis by the public analyst shall be performed in accordance with paragraph 2 of Part II of Schedule 4.
(2) The method to be used in analysing citrus fruit for the purpose of establishing—
(a)the presence in or absence from that fruit of biphenyl, 2-hydroxybiphenyl or sodium biphenyl-2-yl oxide shall be as specified in Part I of Schedule 5;
(b)the quantity of biphenyl in that fruit shall be as specified in Part II of Schedule 5;
(c)the quantity of 2-hydroxybiphenyl or sodium biphenyl-2-yl oxide in that fruit shall be as specified in Part III of Schedule 5.
(3) The modified Clevenger-type separator to be used in analysing citrus fruit in accordance with the preceding paragraph and Parts II and III of Schedule 5 for the purpose of establishing the quantity of biphenyl, 2-hydroxybiphenyl or sodium biphenyl-2-yl oxide in that fruit shall conform with the diagram in Schedule 6.