Yossarian2000 said:my guess would be most UG var is USP23...
TxLonghorn said:Why do you say that? What's the difference between usp23, 24, and 25 oxandrolone? Nothing, because nothing has changed for oxandrolone from 23 to 25.
Yossarian2000 said:Not sure what you mean bro, you're saying the standard for USP23 is identical to that of USP25?
TxLonghorn said:Why do you say that? What's the difference between usp23, 24, and 25 oxandrolone? Nothing, because nothing has changed for oxandrolone from 23 to 25.
juve said:excellent - good to be finally clued in![]()
TxLonghorn said:Why do you say that? What's the difference between usp23, 24, and 25 oxandrolone? Nothing, because nothing has changed for oxandrolone from 23 to 25.
xsnrg said:The USP is used to test the quality of Pharmaceutical Actives, Excipients andPreparations to be sure they are of high enough quality to be sold to the public.
The USP contains: compendia made up of specific monographs for thousands of actives, excipients and preparations. It contains sections on general tests of physical,chemical, and biological properties. The monographs make reference to which general tests and methods are used to test each chemical, as well any changes to be made to the general tests to suit each individual chemical. The monograph also lists the specifications for each test for a given chemical, or in other words the range of values for a given test for a given chemical that are considered to be “passing”. The USP also has a section on making and standardizing all reagent solutions required to perform any of the tests listed within. Finally the USP has a number of reference tables contained in appendices that are necessary to perform some of the calculations associate with the tests contained within.
This isn’t like an octane number when you go to the gas station. Although the USP is updated constantly, the specifications for most chemicals change only very rarely. Most changes involve updating methods to include the more automated equipment that is becoming more common in most labs. Also most updates include many new monographs for medicines that did not exist at the time of publication of previous editions. Because of the nature of updates it is very likely that a chemical that received a USP24 rating is entirely good enough to receive a USP25 or USP26 rating, but just has not been retested. Furthermore because of the pass/fail nature of USP testing it is entirely possible that a chemical with a USP25 rating is more pure than one with a USP26 rating,assuming the chemical receiving a USP26 rating barely passed and the chemical receiving a USP25 rating passed with flying colors
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