For oil and lubrication products, colour plays a significant role in identification and quality, particularly for consumers. Because a mistake in interchanging two products intended for different applications can produce severe consequences, many manufacturers use colours to differentiate the lubricant type. Additionally, an oil’s colour or shade is a good indicator of the product’s age or potency.
Aside from colour matching, one of the most significant quality concerns for a lubricant is colour change, as it can indicate whether a product underwent a modification from its original state. Most oils contain a colour relevant to their specific viscosity or formula. Generally, most lower viscosity lubricants have a lighter colour quality, while higher viscosity products have a darker shade.
Because oil darkens as it oxidizes, colour is an excellent indicator of its age and effectiveness. Lubricants deteriorate from the combination of operating temperature and exposure to oxygen in the air. The higher the device's operating temperature, the faster the oxidation process and the shorter the oil’s life.
While many lubricant manufacturers offer colour coding and charts for quick reference and identification, the ASTM D1500 colour scale applies to a broad range of products, including lubricating and heating oils, diesel fuel, petroleum waxes and more. This scale is also an effective identification tool for buying and selling refined or recycled lubrication products.
While scales and colour charts are the primary tools for buyers and sellers, manufacturers depend on spectrophotometry and colorimetry for quality control during processing. These companies often use spectrophotometers to ensure their blends meet precise colour and consistency specifications before shipping.
HunterLab’s Vista® system offers one of the industry’s most accurate and reliable solutions for measuring lubricant colour and quality. Vista’s custom index feature lets users measure samples in almost any container and receive results for the ASTM D1500, APHA, Gardener and Saybolt scales simultaneously with haze percentage.
Some of Vista’s other key features include:
HunterLab has been a global leader in developing technologically advanced, fast and accurate colour measurement tools since 1952. We pride ourselves on offering superior customer service and product knowledge to enhance colour consistency and make your job easier. Please feel free to explore our blog or contact us online to learn more about the products and services we offer and how they can benefit your operation.
HunterLab goes beyond color, delivering precise, science-backed solutions that help industries achieve superior quality and appearance control. As a global leader in spectrophotometry, we empower businesses to reduce waste, improve efficiency, and enhance product consistency—directly impacting the bottom line. By combining innovation, real-world expertise, and sustainable measurement solutions, we help manufacturers optimize production, minimize material loss, and meet the highest industry standards. Follow us on LinkedIn