The US FDA recommends several ways to establish control measures for glass fragments in juice. One way is the use of on-line glass detection equipment such as X-ray detection. In this method, the product itself is continuously monitored after the last step at which glass inclusion is reasonably likely to occur. This could be for example, at a process step designated for X-ray examination. The critical limit might be designated "no glass fragments in finished product." The following illustrates the elements that might be entered into your HACCP plan. What is the critical limit? No glass fragments in finished product (Note: FDA's Health Hazard Evaluation Board has supported regulatory action against product with glass fragments of 0.3" (7mm) to 1.0" (25mm) in length. See also FDA Compliance Policy Guide 555.425).
