Labthink Knowledge

  A common misconception in the food industry is that once a "Best Before" date is set, it is set in stone. However, food packaging and shelf life are dynamic variables. To ensure consumer safety and brand reputation, shelf life should be revalidated whenever there is a change in the supply chain, recipe, or packaging material, as well as on a routine schedule to account for production "drift." This guide will outline the critical triggers for immediate re-testing and the industry best practices for maintaining long-term shelf stability. What events trigger an immediate revalidation of food packaging and shelf life? You should not wait for an annual audit to re-evaluate your products if any of the following changes occur: Packaging Material Transitions: Switching suppliers or moving to eco-friendly/recyclable films is the most common trigger. These materials often have different density profiles; even a slight change in the thickness of a barrier layer alters the...

  When discussing food safety, most people focus on the food itself ： its ingredients, additives, and nutritional content. However, there is another critical factor that often goes unnoticed: the materials that come into contact with food. Food packaging, beverage containers, coatings, inks, adhesives, kitchen utensils, and processing equipment all fall under the category of Food Contact Materials (FCMs). Although these materials are not intended to be consumed, they can interact with food during storage, transportation, and use. This is why food contact materials are subject to rigorous regulatory oversight, particularly in the European Union. What Are Food Contact Materials? Food Contact Materials include any material or article intended to come into contact with food, or that may reasonably be expected to transfer substances into food under normal conditions of use. Examples include: Plastic packaging Paper and board packaging Beverage bottles Printing inks Coatings and varnishe...

When dangerous gases migrate through packaging materials, the consequences can range from product spoilage to catastrophic safety failures. For industries handling volatile chemicals, pharmaceuticals, or perishable goods, controlling hazardous gas transmission is not a secondary concern—it is a foundation of risk management. Safety-critical packaging must act as an impenetrable barrier, and verifying that performance requires rigorous, repeatable testing. The Hidden Risk: Gas Permeation in Protective Barriers Many packaging failures begin invisibly. Microscale pores or material inconsistencies allow hazardous gases—such as hydrogen (H2), methane (CH4), carbon dioxide, or toxic industrial vapors—to seep through seals, films, or laminates. Over time, even minimal permeation can diminish the packaging designed purpose, or create explosive environments. This is where a gas permeability test becomes indispensable. Unlike simple leak detection, a gas permeability test quantifies the steady-s...

For modern food packaging manufacturers, the landscape has shifted from a focus on shelf-life and aesthetics to surviving a regulatory minefield. The industry is currently grappling with a dual challenge: adhering to increasingly complex global safety standards while rapidly phasing out legacy materials, like Bisphenol A (BPA), in favor of safer alternatives. Section 1: The 2026 Regulatory Landscape (EU & FDA) Navigating international trade requires understanding fundamentally philosophies regarding food contact materials (FCMs). 1. The Precautionary Principle vs. Risk-Based Management EU (Precautionary Principle): The European Union operates on the basis that if an action or policy has a suspected risk of causing harm, the burden of proof that it is not harmful falls on those taking the action. This leads to swifter, blanket bans on specific chemicals. FDA (Risk-Based): The United States FDA ...

When we think of food safety, we often imagine preventing mold or bacterial growth. However, there is an invisible frontier in food safety: the chemical interaction between a product and its container. Migration testing in food packaging is the scientific study of the transfer of chemical substances—such as monomers, plasticizers, and heavy metals—from packaging materials into the food or drink they hold (Intertek, 2024). Food Contact Materials (AI Generated Image) While visible spoilage is easy to spot, chemical leaching is undetectable to the consumer but poses significant long-term health risks. Section 1: Types of Migration: Overall vs. Specific Migration isn't a single measurement; it is categorized by what is being tracked and the level of risk involved. Overall Migration (OM): This measures the total amount of non-volatile substances that move from the package to the food. It is an indicator of the inert...

Recently, our team visited a valuable European laboratory specializing in food contact material testing (overall migration testing). The visit created a valuable opportunity for in-depth discussions on laboratory workflows, the evolving role of automation inconstant weight determination, and the shared potential for future collaboration built on complementary strengths. Specialized testing laboratories bring deep expertise in regulatory interpretation, method validation, and technical reporting, supported by active participation in industry discussions and standardization activities. Instrument manufacturers, meanwhile, contribute through automation engineering, workflow integration, and data-driven system optimization. Progress in food contact materials (FCMs) & overall migration testing often emerges at the intersection of these strengths. Open technical dialogue helps align laboratory experience with engineering innovation, supporting more structured, efficient, and competitive ...