href="/products/portable-spectrophotometers/miniscan-ez-4500l-spectrophotometer"On-line systems provide continuous, real-time measurement of your product on a process line. This allows you to respond to product color changes when they happen, as they happen. HunterLab on-line instruments make real-time color measurements of your product, without contact or intrusion, as it is being produced. Our on the production line spectrophotometers are also sometimes referred to as at-line, in-line and near-line spectrophotometers. From the beginning to end, production runs can be continuously monitored to identify color variation and out-of-spec product. This information helps you make permanent process improvements, while providing assurance that your product is within specification and allowing you to make shipment and allocation decisions.