Quality control is critical in ultramarine blue pigment manufacturing to ensure consistent performance in end applications. Leading manufacturers test every production batch against a comprehensive set of quality parameters before release.
Key quality tests for ultramarine blue include: color value (1/3 SD tint test), tinting strength, pH, moisture content, oil absorption, particle size distribution, and heat stability. Some grades also require testing for heavy metal content and compliance with specific regulations.
Color value and tinting strength are among the most important parameters because they directly affect how much pigment is needed to achieve the desired shade in the end product. Consistent tinting strength reduces batch-to-batch variation for the customer.
At Shree Krishna Ultramarine Pigments (P) Limited, we maintain an ISO-certified quality management system. Each batch of ultramarine blue is tested by our in-house quality control laboratory, and a Certificate of Analysis (COA) is provided with every shipment.
Customers can request specific quality parameters or additional testing to meet their internal specifications. Our quality team works closely with customers to understand their requirements and ensure our pigment consistently meets their standards.