EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ISO 787-4 testing. The principle of the method consists in hot extraction of the material following the procedure specified in ISO 787/3 until a completely clear filtrate is obtained.
ISO 787-4 is part of the ISO 787 series of standards that specifies general testing methods for pigments and fillers. ISO 787-4 specifically covers the determination of acidity or alkalinity of an aqueous extract of pigments and fillers.
The standard provides guidelines for preparing an aqueous extract of the pigment or extender and measuring its pH using a pH meter. The standard also specifies the conditions under which extraction and pH measurement should be performed, such as extraction temperature and time.
Determining the acidity or alkalinity of the aqueous extract is important to evaluate the potential effect of the pigment or diluent on the pH of the final product. For example, if pigment or filler is used in a paint or ink, it can affect the pH of the coating and cause problems such as corrosion or poor adhesion. By measuring the pH of the aqueous extract, manufacturers can identify potential problems before they occur and make adjustments to the formulation if necessary.
ISO 787-4 applies to a wide variety of pigments and extenders, including inorganic and organic pigments, fillers and extenders. The standard specifies the minimum requirements for the accuracy of the pH meter and provides guidance on the use of buffer solutions for calibration.
In general, ISO 787-4 is an important standard for testing pigments and fillers, as it provides a standard method for determining the acidity or alkalinity of an aqueous extract. This helps ensure the quality and performance of pigments and fillers in a variety of applications.
EUROLAB assists manufacturers with ISO 787-4 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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