# The Feedingstuffs (Zootechnical Products) Regulations 1999, Paragraph 4


APPARATUS
4.1 Chromatographic column—A glass column, internal diameter: 20 to 25mm; length: 100 to 150mm plugged at the lower end with glass wool.
4.2 Spectrophotometer, with 10mm cells.

---
Source: https://www.legislation.gov.uk/uksi/1999/1871/schedule/5/part/III/paragraph/4 (the official version)
Page: https://openlegislation.uk/feedingstuffs-zootechnical-products-regulations-1999/schedule-5/part-III/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.