Paragraph 1 Method of carrying out the test
Subject to paragraphs 2 and 3 below, the sample shall be tested by the method prescribed in the British Standard 4285: Section 3.7: 1987 (ISBN 0 580 15866 7).
Subject to paragraphs 2 and 3 below, the sample shall be tested by the method prescribed in the British Standard 4285: Section 3.7: 1987 (ISBN 0 580 15866 7).