# The Milk (Special Designations) (Scotland) Order 1988, Paragraph 6: Examination of cultures


All colonies (including “pin-point” colonies) on each plate shall be counted and the arithmetic mean count obtained. To facilitate counting it is desirable to use a counting chamber, a suitable lens and a tally counter. The result of the count shall be recorded as the number of bacteria per ml. and shall be to the nearest 10, 100 or 1,000 according to whether a dilution of 1 in 10,1 in 100 or 1 in 1,000 has been used.

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Source: https://www.legislation.gov.uk/uksi/1988/2191/schedule/6/part/I/paragraph/6 (the official version)
Page: https://openlegislation.uk/milk-special-designations-scotland-order-1988/schedule-6/part-I/paragraph-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.