The liter is defined by the CGPM, not by NIST. Jim
On 2013-08-05 12:34, Henschel Mark wrote:
I think we should ask NIST to redefine a litre as eight cups. Each one would be slightly bigger than 30 mL, but the math to increase recipe sizes would be a lot easier. Mark ----- Original Message ----- From: Natalia Permiakova <[email protected]> Date: Sunday, August 4, 2013 12:01 am Subject: [USMA:53131] Re: Measuring Cup To: "U.S. Metric Association" <[email protected]> > Eight 240 mL cups should not be equal to two liters. > Sent from Yahoo! Mail on Android > > > > > > ------------------------------------------------------------------------ > * > From: > * > Kilopascal <[email protected]>; > > * > To: > * > U.S. Metric Association <[email protected]>; > > * > Subject: > * > Measuring Cup > > * > Sent: > * > Sun, Aug 4, 2013 4:36:16 AM > > > > > > > > > > > > Everyone needs to know, especially if you prepare > food with measuring cups, that if you use the USC side, that each USC ounce is > precisely 30 mL and the 8 ounce marking on the cup means 240 mL and not 236 and > some decimal dust millilitres. > > If you do conversions from ounces to millilitres > in recipes, do not use 28 g or 29.5 mL. Use both 30 g and 30 mL as the cup > manufacturers are using the FDA and not the NIST definitions for cup > dimensions. > > http://lynnescountrykitchen.net/glossary/utensils/measurecup.html > > A cup-shaped kitchen utensil, > varying in size from 1/4 to 5 cup measures that are used to hold specific > amounts of both dry and liquid ingredients. Traditional small dry measuring cup > sizes are used for dry measures of 1/8, 1/4, 1/3, 1/2, 1, and 2-cup sizes in > U.S. measures or 30 ml, 60 ml, 80 ml, 120 ml, and 240 ml in metric. The liquid > measuring cups can range in sizes that measure from 1 teaspoon or 5 milliliters > to 8 cups or 2 liters. The smallest cup measures 1 to 6 teaspoons in U.S. > measures or 5 to 30 milliliters (ml) in metric. > > Other links with the same 240 mL = 8 ounce > relationship: > > > http://www.etsy.com/listing/57178175/25-mixing-measuring-cups-for-epoxy-resin > http://www.lighthouseproductionsinc.com/disposable-measuring-cup-graduated-8-ounce-240-cc/ > > > >
