Section: Stockmanship Standards
Air Pollutants
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Air Pollutants
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| Gas |
Chemical Formulae |
COSHH
Long-Term
Limit ppm
(8 Hours) |
COSHH
Short-Term
Limit ppm
(10 Mins) |
Effects of High Exposure |
| Ammonia |
NH3 |
25 |
35 |
200 ppm sneezing, salivation and appetite loss. 30 ppm some respiratory signs, reduces mucus removal |
| Carbon Monoxide |
CO |
50 |
300 |
Abortion in pregnant sows |
| Carbon Dioxide |
CO2 |
5000 |
15000 |
100,000 narcotic used in slaughterhouses |
| Hydrogen Sulphide |
H2S |
10 |
15 |
20 ppm appetite is reduced and the animals express a fear of light and are nervousness. Sudden exposure to 400 ppm is lethal. Low concentrations smell of rotten eggs, high concentration no smell. |
You do not need expensive detectors for ammonia
| Concentration NH3 |
Typical Human Effects |
| Below 5 ppm |
No effect |
| 5 to 10 ppm |
Detect its smell |
| 10 to 15 ppm |
Causes mild eye irritation |
| Above 15 ppm |
Causes eye irritation and tear flow |
Dust
Air must contain less than 10 mg/m3 of inhaled dust
Respirable dust particles are 1.6 to 3 ?m in size. Above this size the particles are removed by the upper respiratory tract, below, they blow in and out of the entire respiratory tract.
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Extracted from Garth Pig Stockmanship Standards*
written by Dr John Carr.
You can buy this book HERE
*Published by 5M Enterprises Limited
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© 2000 - 2012. 5m Publishing, Benchmark House, 8 Smithy Wood Drive, Sheffield, S35 1QN, England.