Chromatographic Separation Principles for Mineral Oil Hydrocarbons in Recycled Resins
Online LC-GC-FID with silver nitrate and epoxidation clean-up provides defensible quantification of MOSH and MOAH by removing interfering polymer oligomers.
DIN EN 16995
Meaning
Standard testing protocols establish the analytical methods for measuring mineral oil saturated hydrocarbons and mineral oil aromatic hydrocarbons in food and packaging materials. The din en 16995 standard specifies online liquid chromatography coupled with gas chromatography for this purpose. Sourcing recycled polymers requires compliance with this framework to ensure that migration levels remain below dangerous thresholds.
Molders use these testing results to verify that their raw materials are safe for food-contact applications.
Chromatographic Separation
High-performance liquid chromatography separates the saturated hydrocarbons from the aromatic fraction before injection. Gas chromatography then resolves the individual compounds.
Analytical Scope
The method is designed to analyze vegetable oils and plastic migrates across a wide molecular weight distribution. Sourcing virgin polymers with certified testing protects manufacturers from regulatory non-compliance. When recycled feedstocks are used, the test detects contamination from lubricants or printing inks.
Reliable reporting gives converters confidence in their material choices.
Production Quality
Applying this analytical standard prevents the distribution of contaminated packaging. Converters utilize the data to adjust their filtration or degasification steps during extrusion. When a batch fails the test, the process parameters must be corrected immediately.
Ensuring low migration levels maintains consumer safety and preserves the reputational value of the brand.