Scientific Services

Consultant Microbiologists

Animal Feed Chemists

Mill Farm,
Mill Lane,
NRl2 8HP.
Telephone: 01692 536303
Facsimile: 01692 535213


16th February 1999.


SOURCE: Sok-Lok International Ltd.

ITEMS: Sok-Lok overshoes.

TEST: Biological activity vs. Staphylococcus aureus

ATCC 6538 and Escherichia coli NCTC 8196, using

the Halo Test, including 24hrs pre-diffusion at 4 C.


Sample Zones of inhibition mm

S.aureus E.coli

Halo mm gus Halo mm gus

Control overshoe 0.0 - 0.0 -

Treated overshoe 14.0 - 11.5 -

ATCC = American Type Culture Collection.

NCTC = National Collection of Type Cultures.

gus = growth under sample.

- = Complete suppression of growth.

-/+ = Slight growth.

+/- = Moderate growth.

+ = No suppression of growth.

() = Partial inhibition.


K.M. Self, M.B.I.C.Sc., M.R.S.H.

Proprietor: K.M. Self, M.R.S.H., M.B.I.C.Sc., Member of The Society for General Microbiology,

Associate of The Institute of Biology.

This laboratory participates in the National Agricultural Check Sample Service.