London's Pulse: Medical Officer of Health reports 1848-1972

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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London

Croydon 1935

[Report of the Medical Officer of Health for Croydon]

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Table: Under the Regulations Certified Milk must not contain more than 30,000 bacteria per c.c.Table XIV.

Under the Regulations Certified Milk must not contain more than 30,000 bacteria per c.c.

Table XIV.

GRADE A (TUBERCULIN TESTED) AND GRADE MILKS.Present.Absent.Over 200,000 per c.c.Under 200.000 per c.c.Present in 1/100 c.c.Not present in 1/100 c.c.Present.Absent.Present.Absent.Exceeding a trace.Not exceeding a trace.
Tubercle brcillus...10
Total number of bacteria...10
Bacillus coli ......19
Blood.........10
I'us ...............10
Detritus ............10
...10...1019...10...10...10

Table: The 10 Grade A (Tuberculin Tested) and Grade A milks contained bacteria per c.c. as follows : —

The 10 Grade A (Tuberculin Tested) and Grade A milks contained bacteria per c.c. as follows : —

0—1,0001
1,000—5,0002
5,000—10,0002
10,000—20,0003
30,000—40,0001
80,000—90,0001
10

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Under the Regulations Grade A (Tuberculin Tested) or Grade
11 milk must not contain more than 200,000 bacteria per c.c.
I he following tables summarise the results of the bacterioogical
examinations of Pasteurised milk samples from 1st
January to 31st December, 1935 : —