HYGIENIC MANUFACTURE AND PRESERVATION 797 2. SOURCES OF STOCK CULTURES OF MICRO-ORGANISMS 2.1 Collection o f fungus cultures.' The Curator, Commonwealth Mycological Institute, Kew, Surrey. 2.2 Industrial bacteria, bacteria for microbiological assay, etc..' The Curator, National Collection of Industrial Bacteria, Torry Research Station, Aberdeen, Scotland. 2.3 Yeasts (non-pathogenic).' The Curator, National Collection of Yeast Cultures, The Brewing Industry Research Foundation, Nut field, Surrey. 2.4 Bacteria pathogenic to man and animals: The Curator, National Collection of Type Cultures, Central Public Health Laboratory, Colindale Avenue, London, N.W.9. 2.5 Collection of strains of algae, bacteria, bacteriophages, fungi, and protozoa: The American Type Culture Collection, 12301 Parklawn Dri,ve Rock- ville, Maryland 20852, U.S.A. 2.6 Deposition of cultures Research and industrial organizations may deposit cultures of micro- organisms which are of industrial or research interest with the curators of 2.1 and 2.2. The name of the micro-organism (genus and species) along with details of special properties and applications should be listed, e.g. spoilage organisms suitable for preservation testing. 2.7 type culture collections for use as test organisms Escherichia coli Escherichia coli Klebsiella aerogenes Proteus morganii Proteus vulgaris Recommended strains of bacteria obtainable from NCTC(2.4) ATCC(2.$) 8 196 11 229 15 380 418 10 041 4 635 NCNB(2.2) 9 517

798 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Pseudomonas aeruginosa* Pseudomonas aeruginosa* Pseudomonas fluorescens Staphylococcus aureus* Staphylococcus aureus* Staphylococcus epider•nidis Staphylococcus epidermidis Streptococcus faecalis 6 749 10 038 4 163 4 276 7 291 8 213 15 442 13 525 6 538 9 518 *These strains have been recommended for their known high resistance to antimicrobial agents but it is important to first check the individual strains for their abilityto utilize the unpreserved product as a satisfactory growth medium before commencing detailed pre- servative studies (See Appendix 29 oe.1oe. p. 754). 3. ADDRESSES OF SUPPLIERS OF APPARATUS Supplier Astell Laboratory Service Co. Ltd. 172 Brownhill Road London S.E.26. Equipment Miller-Prickett anaerobic tubes C. F. Casella & Co. Ltd. Regent House Britannia •Valk London N. 1. Airborne bacteria sampler Fisons Scientific Apparatus Ltd. Loughborough Leicestershire. •Vhirlimixer Arnold R. Horwell Ltd. 2 Grangeway Kilburn High Road London N.W.6. Kampff micro-burner Grahams Calgiswabs $Vooden applicator sticks (for swabs) Medical Alginates Wadsworth Road Perivale, Middx. Millipore (U.K.) Ltd. 109 Wembley Hill Road •Vembley, Middx. Oxoid Ltd. Southwark Bridge Road London S.E. 1. Alginate wool Membrane filters Sterilfil filtration systems, etc. Membranes (bacteriological) Sterilin Ltd. Richmond Surrey. R. B. Turner & Co. Ltd. Inocula House Church Lane London N. 12. Rodac plates Disposable Pasteur pipettes