Labthink Knowledge

  In February 2026, our team visited a leading packaging manufacturer’s R&D laboratory in Finland to review their experience with the Labthink C840H Integrated Residue on Evaporation Testing System . Below is a summary of the discussion presented in Q&A format. Q1: How was the workflow before installing the Labthink C840H Integrated Residue on Evaporation Testing System? Laboratory Response: Before the installation of the C840H system, overall migration testing required continuous manual monitoring. Technicians needed to: Weigh cups every 30 minutes Closely monitor evaporation progress Remain present throughout the entire drying cycle The process required significant time and manpower. Achieving constant weight was repetitive and labor-intensive. Q2: What changes have you observed after implementing the system? Laboratory Response: The workflow has become more structured and efficient. Currently, approximately two testing rounds are conducted e...

In the highly regulated worlds of pharmaceutical and food packaging, the material " barrier property " is only half the story. While we often focus on what stays out (Oxygen and Moisture), it is equally critical to monitor what moves in—specifically, the migration of chemicals from the packaging material into the product. To ensure safety, the industry relies on a hierarchy of tests: Residue on Evaporation (ROE), Overall Migration (OM), and Extractables & Leachables (E&L). (AI generated image) 1. Defining the Terms While these terms can be confusing, they are essentially different "lenses" used to view the same physical phenomenon: the transfer of mass. Gravimetric Testing: This is the fundamental physical method. It involves using a high-precision microbalance to measure the weight of solids left behind after a solvent has been evaporated. Residue on Evaporation / Non-Vol...