As a general rule, IRAs have an annual contribution limit of $5,000 per individual. There are income limitations which limit which IRA you can contribute to, for example, deductible IRAs, Roth IRAs and non-deductible IRAs.
The pH range is from 0 to 14, with 7.0 being neutral. Anything above 7.0 is alkaline, anything below 7.0 is considered acidic. Human blood stays in a very narrow pH range right around (7.35 - 7.45). Below or above this range means symptoms and disease.
In general, the normal BUN level for healthy individuals is 7-20 mg/dL (2.5 to 7.1 mmol/L) in adults, and 5-18 mg/dL in children. But normal ranges may vary, depending on the reference range used by the lab, and your age. Infants have lower levels than other people do.