[Report of the Medical Officer of Health for Port of London] page 58

City of London 1933

[Report of the Medical Officer of Health for Port of London]

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Date. 1933.	Sample.	Result of Analysis.			Action taken.
July 5	Salmon	This sample was found to contain tin equivalent to 0.26 grains of tin per pound.			Consignment released.
„ 8	Tomato Puree	This sample was found to contain tin equivalent to 0.64 grains of tin per pound.			Consignment released.
„ 11	Grape Fruit Pulp	This sample was found to contain sulphite preservative equivalent to 2,020 parts of sulphur dioxide per million.			Consignment re-exported.
„ 14	Sardines (5)	These samples on analysis gave the following results:—			Reported to the Ministry of Health.
		Sample No.		Lead, parts per million.	Reported to the Ministry of Health.
		1		9	Reported to the Ministry of Health.
		2		none
		3		2
		4		15
		5		7
„ 18	Sardines (4)	1		6
		2		10
		3		11
		4		6
„ 26	Chocolate Paste	Found to be free from the presence of preservatives.			Consignment released.
Aug 24	Sardines (10)	These samples on analysis gave the following results:—			Reported to the Ministry of Health.
		Sample No.		Lead, parts per million.	Reported to the Ministry of Health.
		1		5	Reported to the Ministry of Health.
		2		8
		3		22
		4		10
		5		8
		6		15
		7		2
		8		12
		9		18
		10		8
Sept. 5 &	13 Sardines (4)	1		50
		2		35
		3		30
		4		30
„ 5 & 13	Sardines (4)	The can in which these sardines were packed was found to contain lead and lead compounds equivalent to 660 parts of lead per million or 0.0145 grains of lead per square inch.			Reported to the Ministry of Health.
		The oil was also found to contain lead and lead compounds equivalent to 11 parts of lead per million.
„ 14	Water (2). These samples on analvsis save the following results:—
	(1)				2
	Grains per Gallon.
	Ammonia, Free and Saline			0.0002	0.0002
	„ Albuminoid			0.0021	0.0035
	Oxygen absorbed, in 15 minutes			0.0185	0.0228
	„ „ „ 4 hours			0.0357	0.0386
	Nitrogen, Nitrous			None.	None.
	„ Nitric			0.12	0.13
	Chlorine			5.20	4.70
	„ as Sodium Chloride			8.58	7.76
	Total solid matter dried at 100° c.			35.35	34.30
	Appearance in 2 ft. tube			Colourless and clear.	Very pale yellow and clear.
	Metals (Copper, Lead, Iron, Zinc)			race of Iron.	Trace of Iron.
	B. Coli Communis, Presumptive Test:—
	100 c.c.			Negative.	Negative.
	10 c.c.			Negative.	Negative.
	1 c.c.			Negative.	Negative.
This water, in its present condition, is suitable for all dietetic purposes.
„ 28	Oysters in tins	this sample was found to be free from preservatives.			Consignment released.
Oct. 6	Sardines	Contained lead and lead compounds equivalent to 7 parts of lead per million. The can was found to contain 16 parts of lead per million.			Reported to the Ministry of Health.
„ 6	Sardines	Contained lead and lead compounds equivalent to 13 parts of lead per million. The can was found to contain 64 parts of lead per million.			Reported to the Ministry of Health.