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It is the same concept as volume percent (vol%) except that the latter is expressed with a denominator of 100, e.g., 18%. The volume fraction coincides with the volume concentration in ideal solutions where the volumes of the constituents are additive (the volume of the solution is equal to the sum of the volumes of its ingredients).
For example, the conversion factor between a mass fraction of 1 ppb and a mole fraction of 1 ppb is about 4.7 for the greenhouse gas CFC-11 in air (Molar mass of CFC-11 / Mean molar mass of air = 137.368 / 28.97 = 4.74). For volume fraction, the suffix "V" or "v" is sometimes appended to the parts-per notation (e.g. ppmV, ppbv, pptv).
28.4 mL: 30 mL: Traditional Scottish spirits measure Peg (India) 1 imp fl oz-28.4 mL: 30 mL: Also called a "small peg"; a "large peg" is a double measure of 2 imperial ounces (60 mL). Traditional spirits measure on the Indian subcontinent. 1 ⁄ 4 Gill (Irish) 1 + 1 ⁄ 4 imp fl oz: 35.5 mL: 35 mL: Traditional Irish spirits measure Pony (U.S ...
Measurements of decadic attenuation coefficient μ 10 are made at one wavelength λ that is nearly unique for bilirubin and at a second wavelength in order to correct for possible interferences. The amount concentration c is then given by c = μ 10 ( λ ) ε ( λ ) . {\displaystyle c={\frac {\mu _{10}(\lambda )}{\varepsilon (\lambda )}}.}
Micropipettes can take a minimum volume of 0.2 μL and maximum volume of 10,000 μL (10 mL). [ 2 ] [ 3 ] They thus are used for smaller-scale transfers than equipment such as graduated pipettes , which come in 5, 10, 25 and 50 mL volumes.
The US Customary system of units makes use of set of dry units of capacity that have a similar set of names [Note 7] to those of liquid capacity, though different volumes: the dry pint having a volume of 33.6 cubic inches (550 ml) against the US fluid pint's volume of 28.875 cubic inches (473 ml) and the imperial pint of 34.68 cubic inches (568 ...
The equivalent SI measure is the nanogram per second per square meter per pascal. [citation needed] 1 ng·s −1 ·m −2 ·Pa −1: ≈ 0.0174784 U.S. perms
To make a 100 ml solution of T 10 E 1 buffer, 1 ml of 1 M Tris base (pH 10–11) and 0.2 ml EDTA (0.5 M) are mixed and made up with double distilled water up to 100ml. Add microliter amounts of high molarity HCl to lower the pH to 8. Based on nuclease studies from the 1980s, the pH is usually adjusted to 7.5 for RNA and 8.0 for DNA.