Chemical reagents and reference standards
- HPLC and GC solvents;
- For molecular biology;
- For cell biology;
- For electrophoresis;
- For biochemistry;
- For analytical research;
- Staining reagents;
- Reagents for synthesis.
- Pharmacopoeia reference standards;
- Secondary reference standards.
Chemical reagents are substances whose main purpose is to carry out various laboratory, scientific and research procedures.
All reagents used for chemical reactions can have a different composition, so they are usually divided into several groups:
- Organic elements;
- Inorganic substances;
- Compositions containing radioactive isotopes;
- Analytical reagents;
- Solvents;
- Chemical indicators;
- Precursors, poisons.
Chemical reagents have different features. So, they can be explosive, poisonous and flammable. The use and storage of such substances should be carried out taking into account their properties.
An important feature of chemicals is their purity. When using a reagent, it is necessary to pay attention to the degree of its purity. Thus, all substances can be divided into pure, purified, high purity, technical, chemically pure.
Reference standard (RS) is a substance that is sufficiently homogeneous and stable with respect to one or more specified properties in order to be used in accordance with its intended use in the measurement process.
Reference standards are used as “references” in the substances identification, instruments calibration during quantitative analysis, methods validation and quality control of measurement results. Thus, a reference standard is a substance with a well-defined value (called a “certified value”). Widely used by enterprises and laboratories that carry out analytical, metrological studies of petroleum products, minerals, metals, alloys, clinical and chemical analyses, as well as monitoring and control of environmental pollution.