What does analytical pure mean? reagent
Experimental reagent: Abbreviated as LR, also known as the fourth-level reagent.
Chemically pure reagent: abbreviated as CP, also known as tertiary reagent, generally labeled with dark blue on the bottle.
Analytical pure reagent: abbreviated as AR, also known as secondary reagent, usually labeled in red on the bottle.
Guarantee reagent: abbreviated as GR, also known as first-class reagent, generally with a green label on the bottle (also known as excellent purity)
Reference reagent: abbreviated as PT, it is specially used as a reference substance and can be directly prepared as a standard solution.
Spectrally pure reagent: abbreviated as SP, which means spectral purity. However, since organic matter cannot be displayed on the spectrum, sometimes the main component cannot reach more than 99.9%, so it must be paid attention to when using it, especially when it is used as a reference, it must be calibrated.
Analytical purity (AR, red label) (second grade): The purity is slightly lower than that of excellent grade purity, and the impurity content is slightly higher than that of excellent grade purity. It is suitable for important analysis and general research work, such as common reagents in general laboratories, research institutes and other places. Often represented by AR.
Analytical purity is the purity specification of chemical reagents, which belongs to the second-level product. The analytical purity label is golden red, which is used for general analytical tests (preparation of ordinary test solutions in quantitative analysis); for specific purity, different drug requirements are different. The so-called analytical purity refers to the purity level of the reagent
, that is, the difference between the content and purity of a reagent. The reagent is often packaged in small bottles, usually 500g/bottle. Analytical purity refers to the reagent used for analytical determination, with very few impurities, which does not hinder the analytical determination; chemical purity refers to the general chemical test, with fewer impurities, and does not hinder the experimental requirements; and chromatographic purity refers to the standard reagent used in chromatographic analysis. Under chromatographic conditions, only the peak of the specified compound appears, and no impurity peak appears. And for chemical purity, analytical purity, and excellent purity, different product requirements are often different.
Analytical purity (AR, red label) (secondary product): high content of main components, high purity, low interference impurities, suitable for industrial analysis and chemical experiments.
