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  2. Dilution ratio - Wikipedia

    en.wikipedia.org/wiki/Dilution_ratio

    The following formulas can be used to calculate the volumes of solute (V solute) and solvent (V solvent) to be used: [1] = = where V total is the desired total volume, and F is the desired dilution factor number (the number in the position of F if expressed as "1/F dilution factor" or "xF dilution"). However, some solutions and mixtures take up ...

  3. Dilution (equation) - Wikipedia

    en.wikipedia.org/wiki/Dilution_(equation)

    The dilution in welding terms is defined as the weight of the base metal melted divided by the total weight of the weld metal. For example, if we have a dilution of 0.40, the fraction of the weld metal that came from the consumable electrode is 0.60.

  4. Homeopathic dilutions - Wikipedia

    en.wikipedia.org/wiki/Homeopathic_dilutions

    If one begins with a solution of 1 mol/L of a substance, the dilution required to reduce the number of molecules to less than one per litre is 1 part in 1×10 24 (24X or 12C) since: 6.02×10 23 /1×10 24 = 0.6 molecules per litre

  5. Serial dilution - Wikipedia

    en.wikipedia.org/wiki/Serial_dilution

    A tenfold dilution for each step is called a logarithmic dilution or log-dilution, a 3.16-fold (10 0.5-fold) dilution is called a half-logarithmic dilution or half-log dilution, and a 1.78-fold (10 0.25-fold) dilution is called a quarter-logarithmic dilution or quarter-log dilution.

  6. Mud weight - Wikipedia

    en.wikipedia.org/wiki/Mud_weight

    In the oil industry, mud weight is the density of the drilling fluid and is normally measured in pounds per gallon (lb/gal) (ppg) or pound cubic feet (pcf) . [1] In the field it is measured using a mud scale or mud balance. Mud can weigh up to 22 or 23 ppg. A gallon of water typically weighs 8.33 pounds (or 7.48 ppg).

  7. Mixing ratio - Wikipedia

    en.wikipedia.org/wiki/Mixing_Ratio

    In atmospheric chemistry, mixing ratio usually refers to the mole ratio r i, which is defined as the amount of a constituent n i divided by the total amount of all other constituents in a mixture:

  8. Isotope dilution - Wikipedia

    en.wikipedia.org/wiki/Isotope_dilution

    Adding of an isotopically altered standard to the sample changes the natural isotopic composition of the analyte. By measuring the resulting isotopic composition, it is possible to calculate the amount of the analyte present in the sample. Isotope dilution analysis is a method of determining the quantity of chemical substances. In its most ...

  9. Alcohol measurements - Wikipedia

    en.wikipedia.org/wiki/Alcohol_measurements

    A tenth (1 ⁄ 10, or 0.1) of a US gallon. Called a "Commercial Pint" because it was equivalent to 0.8 US liquid pints. Replaced by the 375 mL "metric pint". Reputed Pint (UK)-13.3 imp oz. 378 mL: The "Reputed Pint" (2 ⁄ 3 Imperial pint or 1 ⁄ 12 Imperial gallon) was devised to split a standard gallon into twelve small bottles. Originally ...