The ASTM D3306-21 standard, published by the American Society for Testing and Materials (ASTM), describes the requirements for ethylene glycol or propylene glycol or glycerin-based engine coolants containing ethylene glycol used in automobiles or other light-duty cooling systems. When concentrates are used at a concentration of 40 to 60 percent by volume in water, or when pre-diluted glycol-based engine coolants are used at a concentration of 50 percent or higher by volume without further dilution, they will function effectively to provide protection against freezing, boiling, and corrosion.
This standard is based on information on the performance of engine coolants prepared from new or virgin components. This standard also applies to engine coolants prepared using glycol produced from recycled or reprocessed used coolant or reprocessed industrial source glycol, provided that said glycol meets the requirements of the ASTM E1177 standard.
There are different standards (ASTM D1177 and ASTM D6471 standards) for engine coolants prepared from recycled or reprocessed used coolant or reprocessed industrially sourced glycol that do not meet the requirements set in the ASTM E6472 standard.
This standard also applies to glycol-based engine coolants prepared using fully refined glycerine, provided that said glycerin meets the requirements of the ASTM D7640 standard.
This standard applies to glycol-based engine coolant for automobiles and light duty. There are ASTM D4985 and ASTM D6210 standards for heavy-duty engine service.
By the way, coolant and antifreeze are often used interchangeably, but they are not the same thing. Antifreeze is produced from ethylene glycol or propylene glycol and is the basic ingredient, but must be mixed with water to form the coolant.
Our organization, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, with its trained and expert staff and advanced technological equipment, standard test for glycol-based engine coolant for automobile and light service services within the scope of ASTM D3306-21 standard. also provides services.
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