[Report 1946] / Medical Officer of Health, Chippenham Borough.

  • Chippenham (Wiltshire, England). Borough Council.
Date:
1946
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1946] / Medical Officer of Health, Chippenham Borough. Source: Wellcome Collection.

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    Appearance Colour Odour Reaction Acidity as CO2 Electric conductivity at 20' Alkalinity as CaC02 Bright—very few particles of mineral debris. Tubidity : Less than 5 parts per million. Silica Scale. Normal Nil. Neutral: 7.2 2.4 C 590. 26.5. Results expressed in parts per 1,00,000. Ca. Mg. Na. CO3 SO4 Cl. NO3 Si02 Probable Combinations. 11.3 0.8 15.9 5.5 2.1 1.0 10.6 15.9 Calcium Carbonate 26.T0 0.7 1.7 Calcium Sulphate 2.40 0.8 3.1 Magnesium Sulphate 3.90 0.3 0.7 Sodium Sulphate 1.00 1.4 2.1 Sodium Chloride 3.50 1.0 Silicia 1.00 Difference 0.70 39.00 Carbonate Hardness Total 31.0 (Temporary) Free Ammonia Less than 0.004 Albuminoid Ammonia — Oxygen absorbed in 4 hours at 80° Nitrogen in Nitrates 0.00 Metals Absent Non-Carbonate 26.5 (Permanent) 4.5 Ammoniacal Nitrogen — Albuminoid Nitrogen — 0.015 Nitrogen in nitrites Absent. Signed. GORDON MILES.