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Percentage, ppm, and ppb Conversions

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Percentage, ppm, and ppb Conversions

By Susan E. Fielder, DVM, MS, DACVP (Clinical Pathology), Clinical Assistant Professor, Department of Pathobiology, Center for Veterinary Health Sciences (CVHS), Oklahoma State University

Percentage, ppm, and ppb Conversions

ppm

ppb

Percentage

0.001

1

0.0000001

0.01

10

0.000001

0.1

100

0.00001

1

1,000

0.0001

10

0.001

100

0.01

1,000

0.1

10,000

1

Other useful conversions: 1 mg/kg = 1 ppm; 1 g/ton = 1.1 ppm; 100 g/ton = 110 ppm

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Test your knowledge

The clinical signs of frontal sinusitis include fever, anorexia, nasal discharge, changes in nasal airflow, and bad breath. Which of the following conditions is most likely to cause frontal sinusitis in cattle?