See Also: Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Su Song(encyclopedia)
Yi Song-gye(encyclopedia)
song(encyclopedia)
Song(dictionary)
Song(tourism)
song(dictionary)
uht-song(dictionary)
Song dynasty(encyclopedia)
Song flights(tourism)

vitamin C unit (medicine) and Su Song (sh)


vitamin C unit (medicine)


vitamin C unit


The vitamin C activity of 0.05 mg of the standard crystalline levoascorbic acid; 1 mg of crystalline vitamin C provides 20 USP unit's.

See: Sherman unit.


Su Song (sh)




or Su Sung

born 1020, Fujian Province, China
died 1101, Kaifeng

Chinese scholar and administrative and financial expert in the imperial bureaucracy.

His Illustrated Pharmacopoeia (1070) revealed his knowledge of drugs, zoology, metallurgy, and related technology. An armillary clock that he built to serve as the basis of calendrical reform was housed in a 35-ft (11-m) tower and powered by a waterwheel and chain drive; its mechanism anticipated techniques that would not be used in Europe for hundreds of years.