Orders placed by 3:00 p.m. today will ship today from the warehouse
$49.00
$49.00
Depending on the intended use, it is necessary to specify the exact purity or quality when ordering chemicals.
degrees of purity in German on mychem.ch (there are others as well):
1. “technical”: All chemicals without an additional designation (e.g., “sodium chlorite”) are considered “technical.”
2. “pure”
3. “puriss"
4. "pheur"
Information on purity grades:
1. Technical grade.
Products with or without the “technical” purity designation usually have an “impure” composition. They are produced on an industrial scale and may exhibit foreign odors and colors. Their content of, for example, heavy metals such as lead, etc., is usually relatively high. They are used for general technical purposes.
2. Pure (purum), i.e., chemically pure grade
—minimum purity of 97%, unless another percentage is specified
—suitable for synthesis and laboratory purposes
3. puriss = of the highest possible
purity. These are substances of exceptionally high purity, such that no impurities can be detected using standard chemical analytical methods.
4. “pheur” or “Ph. Eur.”
are the common abbreviations for the European Pharmacopoeia (European Pharmacopea). Ph. Eur. is a collection of official standards that, upon publication, provide a legal and scientific basis for the quality control of substances intended for pharmaceutical use and of drugs during the development, production, and marketing processes.
However, the specific purity level is not standardized and is determined by the respective manufacturer. The exact specifications of two chemicals that appear to have the same degree of purity do not necessarily have to be identical; they always depend on the manufacturer.
In most cases, food-grade substances are less pure than “puriss” and “Ph Eur.” “Ph Eur” describes the quality of pharmaceuticals and their components, which are subject to the strictest purity and quality standards. Food-grade, on the other hand, refers to the suitability of substances for food processing and thus for human consumption and may allow for a certain tolerance of specific impurities that are not permitted, for example, for analytical purposes.
Usage Notes
In some cases, the safety data sheets and additional information may include a usage note for the substance. Under no circumstances should you interpret this as a restriction on use. Usage notes such as “for microscopy” or “for biochemical purposes” simply indicate that certain specifications are specifically tailored to these applications.
Depending on the intended use, it is necessary to specify the exact purity or quality when ordering chemicals.
degrees of purity in German on mychem.ch (there are others as well):
1. “technical”: All chemicals without an additional designation (e.g., “sodium chlorite”) are considered “technical.”
2. “pure”
3. “puriss"
4. "pheur"
Information on purity grades:
1. Technical grade.
Products with or without the “technical” purity designation usually have an “impure” composition. They are produced on an industrial scale and may exhibit foreign odors and colors. Their content of, for example, heavy metals such as lead, etc., is usually relatively high. They are used for general technical purposes.
2. Pure (purum), i.e., chemically pure grade
—minimum purity of 97%, unless another percentage is specified
—suitable for synthesis and laboratory purposes
3. puriss = of the highest possible
purity. These are substances of exceptionally high purity, such that no impurities can be detected using standard chemical analytical methods.
4. “pheur” or “Ph. Eur.”
are the common abbreviations for the European Pharmacopoeia (European Pharmacopea). Ph. Eur. is a collection of official standards that, upon publication, provide a legal and scientific basis for the quality control of substances intended for pharmaceutical use and of drugs during the development, production, and marketing processes.
However, the specific purity level is not standardized and is determined by the respective manufacturer. The exact specifications of two chemicals that appear to have the same degree of purity do not necessarily have to be identical; they always depend on the manufacturer.
In most cases, food-grade substances are less pure than “puriss” and “Ph Eur.” “Ph Eur” describes the quality of pharmaceuticals and their components, which are subject to the strictest purity and quality standards. Food-grade, on the other hand, refers to the suitability of substances for food processing and thus for human consumption and may allow for a certain tolerance of specific impurities that are not permitted, for example, for analytical purposes.
Usage Notes
In some cases, the safety data sheets and additional information may include a usage note for the substance. Under no circumstances should you interpret this as a restriction on use. Usage notes such as “for microscopy” or “for biochemical purposes” simply indicate that certain specifications are specifically tailored to these applications.
