Euric, I thought we covered that a year or two ago. Blood donations to the American Red Cross are in "units". A "unit" is defined based on a range of masses; that is, there is a minimum and a maximum allowable mass for a unit.
The "pint" went away officially some thirty years ago but the name has hung on so a "gallon" is really 8 "units", not 8 "pints" despite what the card might say, if you can fathom that. Well, there's my sixpence worth of comment. Jim On Saturday 2004 August 07 13:15, Euric wrote: > If I donate a pint, how much blood am I really donating? > > The collection bags hold 450 mL of product. The standard US pint is 473 > mL. When you say pint, do you mean 473 mL or the 450 mL the bag holds. > What means do you use to measure a pint? > > When you say gallon, do you mean 3.785 L based on a 473 mL pint, or do you > mean 3.6 L, based on the 450 mL capacity of the bag? > > Below you mention a donor who has given 24 gallons. How much did he > actually give? Based on the standard definition of the gallon, that would > be 91 L. Based on the amount of blood held in the bags, that would be > about 86.5 L. That is a 4.5 L difference in the two meanings. > > I'm just curious to know how you determine the amount of blood in a pint > and gallon. > > > > > American Red Cross Recognizes 24 Gallon Blood Donor > > > Philadelphia, PA, April 29th, 2004 - > Montgomery County's Hal Kellogg Has Been Donating Blood for 70 Years > > > > Proving that there is no age limit to donate blood, Howard "Hal" > Kellogg recently gave his 24 gallon blood donation for the American Red > Cross at the age of 88. > > > > Thanks, > > Euric -- James R. Frysinger Lifetime Certified Advanced Metrication Specialist Senior Member, IEEE http://www.cofc.edu/~frysingj [EMAIL PROTECTED] [EMAIL PROTECTED] Office: Physics Lab Manager, Lecturer Dept. of Physics and Astronomy University/College of Charleston 66 George Street Charleston, SC 29424 843.953.7644 (phone) 843.953.4824 (FAX) Home: 10 Captiva Row Charleston, SC 29407 843.225.0805
