We use Da and kDa in our drug manufacturing operations at Genentech/Roche Pharmaceuticals.
-- Scott Hudnall On Apr 8, 2013, at 21:32, Paul Trusten <[email protected]> wrote: > It takes a long time to achieve de facto deprecation of a unit. If the amu > was replaced by the dalton in 1961, no one reached the authors of my first > science textbooks or teachers with the news (1965). In fact, I never heard of > the dalton until the mid-seventies, so we shall probably continue struggling > with that old name for Celsius for a while to come, too, even 65 years after > its deprecation. > > Paul Trusten, Reg. Pharmacist > Vice President > U.S. Metric Association, Inc. > Midland, Texas USA > www.metric.org > +1(432)528-7724 > [email protected] > > > On Apr 8, 2013, at 20:29, Michael Payne <[email protected]> wrote: > >> Interesting Unit at >> http://en.wikipedia.org/wiki/Insulin-like_growth_factor_1 >> >> forth paragraph down: >> >> IGF-1 consists of 70 amino acids in a single chain with three intramolecular >> disulfide bridges. IGF-1 has a molecular weight of 7,649 daltons. >> >> There is another page on Daltons >> http://en.wikipedia.org/wiki/Dalton_%28unit%29 A unit accepted for use with >> SI, seems with the prefixes we have, some sub unit of a gram would have been >> equally good. Or is this something like the Astronomical unit on the other >> end of the scale? >> >> Michael Payne >
