Most of the chemical reactions that take place in a non aqueous environment can be very sensitive to minute amounts of water. Therefore, for analysis or organic synthesis in a dry environment, solvents with a very low amounts of water should be used. Dry solvents are also used to determine the water content of chemicals by the Karl Fischer method and in modern inorganic and organic research methods. DRM provides dry grade solvents with very minute amount of water within the acceptable range specified in pharmacopeia of different countries.

In such reactions that are sensitive to very low amounts of water, it is recommended to use solvents of dried grade.

Solvents suitable for gradient liquid chromatography, in addition to very high transparency in the visible-ultraviolet region, should have very small amounts of water, acid, alkalinity and solid residue after evaporation. To achieve such precise specifications, we manufacture gradient liquid chromatography solvents using high-quality raw materials and advanced distillation equipment. Passing through a 0.2 micron filter is an essential process in the production of chromatographic solvents, which is performed just before the packaging process. These solvents are suitable for a variety of liquid chromatography techniques.

Solvents of this category have gradient grade purity. Since the sensitivity in the isocratic liquid chromatography method is less than that of the gradient type, we offer special isocratic chromatography solvents that bring high resolution separation along with lower operating costs.

In spectrophotometric studies, obtaining reliable results is highly dependent on the use of ultrapure solvents in the sample preparation stage. Suitable solvents of this category should not only have high transparency in the visible and ultraviolet spectrum, but the presence of impurities such as water, alkali and acid should also be controlled at an extremely low level. Also, the amount of non-volatile residue after boiling should be very low. DRM has processed the solvents of this grade using high quality raw materials, so that the specifications of the American Chemical Society for spectrophotometric studies are met.

Solvents of this grade are used in gas chromatography studies. This feature is not only due to their high purity, but also due to the presence of small amounts of water, acid and alkali, as well as the absence of additional peaks in gas chromatography analyses. Our gas chromatography grade solvents are purified and supplied with precise specifications to meet the different applications such as sample preparation and dissolution in gas chromatography studies.

The American Chemical Society has determined technical specifications and purity for approximately 500 reactive chemicals and more than 500 standard reference materials, so that they are accepted by researchers and industrialists around the world. DRM offers various types of chemicals, reagents and standard solutions in accordance with ACS specifications to ensure reliable results even for extremely sensitive tests.

The United States Pharmacopeia has defined specifications for chemicals used as raw materials in the pharmaceutical industry. Materials with USP grade have the necessary standards for use in the pharmaceutical and food industries and are used in world leading laboratories. DRM, due to having GMP certificate, produces a wide range of chemicals with USP grade, which have been quality approved in a well-equipped laboratory according to USP test protocols.

BP grade products are in accordance with the standards set by the UK National Pharmacopoeia in terms of purity and absence of impurities. This pharmacopoeia is a set of quality standards for the production of medicinal substances that is published annually in the UK and is used by individuals and organizations involved in the testing, research, development and production of medicinal substances and compounds DRM, by obeying the GMP rules and regulations has recently started producing chemicals with BP grade, all of which have been quality approved based on BP standards and tests.

EP grade is defined as pharmaceutical grade according to the European Pharmacopoeia. This pharmacopoeia contains a series of official standards for pharmaceutical compounds available in Europe, which are used in the production stages of bulk pharmaceuticals, chemical and biological analysis methods, reagents, and auxiliary substances of drugs. The standards of this grade are seriously applied in the preparation of raw materials and active pharmaceutical ingredients. DRM has recently started producing chemicals with EP grade.

Laboratory grade materials are often used in laboratories and research and educational institutions. Although the purity of these materials is high, the exact amount of their impurity is not known. As a result, this category of materials is not recommended for pharmaceutical, food and medical applications. We manufacture a wide range of laboratory grade chemicals including acids, bases, salts and solvents to cover the sensitive needs of various laboratories. The specifications of laboratory chemicals are set in such a way that they can be used for different applications.

Extra pure grade is related to products that are suitable for qualitative and semi-quantitative use. This category of chemicals is suitable for general laboratory work and in most cases they have pharmacopoeia standards such as BP and USP. In order to cover general applications in laboratories where low sensitivity and low operating costs are important, we offer a wide range of chemicals including acids, salts and solvents with this grade.

Chemicals that are mostly used in clinical and pathobiology laboratories are produced under the title of histology grade. These products are tested according to international standards in order to best cover the needs of customers in medical diagnostic laboratories. In DRM, all the production steps of materials with this grade are carried out in accordance with ISO 13485 guidelines.

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** As a brief guide, you can find your application in the “Typical application” column and then select the appropriate chemical grade from the left column. The “Norms” column indicates which globally accepted references each grade offered by DRM, if you do not find the table helpful, you can contact the experts of DRM to guide you sincerely.