Urine

A suprisingly useful aqueous mixture of several compounds.

Production

Production of urine is a natural process for most animals.

Components

The major products of interest derived from human urine are:

• Water
• Urea, approximately 9.3g (0.66 moles) per liter.
• Salt 3g per liter
• Phosphorus, 0.4 to 1.0 gram per liter.

Other animals may also include:

• Ammonia
• Uric acid

Maximizing urea content

In the ammonia production from urine process, it is of value to maxiomize the urea content of urine. Simple ways to do this include:

1. Collect urine first thing in the morning - urea is produced during the night, but is not diluted by additional water (not) consumed while you sleep.
2. Collect urine within 36 hours of heavy excercise
3. Collect urine from humans eating large amounts of protein rather than carbohydrates.

Obviously all of these could be done simultaneously, given the right diet, excercise, and sleeping schedule.

See Also

• Composition and Concentrative Properties of Human Urine
• Composition and Concentrative Properties of Human Urine (not fulltext)