GB/T 38722-2020 "Surface active agents—Determination of interfacial tension—Drawing up liquid films"

GB/T 38722-2020 Determination of surfactant interfacial tension by pulling up liquid film method. The standard specifies the accuracy and specifications of the required instruments and equipment, and guides how to prepare uniform and stable surfactant solution samples. The operation process of pulling up liquid film is specified in detail, including key points such as liquid film formation speed and measurement timing. According to this standard, surfactant interfacial tension can be accurately measured, providing a reliable basis for surfactant performance evaluation and mass control, helping its rational application in daily chemical, chemical and other fields, and promoting product optimization and upgrading.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.