Migration simulation under exposure to light with the "Sieg-Mi-Flex"
Application examples for migration simulations with migration cells under exposure to light - and interesting variants of taste test
„Materials and articles must be manufactured in such a way that, under normal and foreseeable conditions of use, their constituents only migrate to a food or pharmaceutical formulation in such small quantities that they do not endanger the health and the food or the pharmaceutical in terms of smell and taste do not interfere“ is the meaning of the definition of food and pharmaceutical conformance of packaging materials.
To simulate the mass transfer of constituents from food contact materials, LABC-Labortechnik has developed a comprehensive range of migration cells (migration chambers).
These allow practical sample preparation, subsequent analytical measurement and organoleptic testing of the migration of packaging materials, „Extrcables and Leachables“ (E&L) and MOSH/MOAH as well as POSH/POA in food simulants, in headspace or in pharmaceutical formulations.
The migration simulations are carried out depending on the temperature and the time with legally prescribed simulants or in the headspace phase.
The influence of light (visible light/UV light) on the migration result can be done with migration simulations in a special migration cell (migration chamber) which is presented below.
Furthermore, taste test variants on organoleptically relevant migrants with water as test food after a migration simulation with food packaging materials are specified. Migration cells (migration chambers) allow migration simulation of the surface of sample specimen without cut edges.
Migration simulations of packaging under the influence of light with the Combination Migration Cell System-Siegwerk (Sieg-Mi-Flex) consisting of a Fixing Plate Set made of Borofloat® glass plates and stainless steel center rings.
Borofloat® glass made by Schott; in addition to its good mechanical and glass-blowing machinability, also has special optical properties:
- unhindered translucent, especially in the visible wavelength range
- high transparency in the near IR and UV wave range
- low auto-fluorescence and solarization tendency
Into the Combination Migration Cell System-Siegwerk (Sieg-Mi-Flex) a test sample foil will be clamped and food simulants will be filled in. The horizontally positioned migration chamber is irradiated with light at room temperature. For the migration simulations under the influence of light and in dependence of the temperature light thermostats are also suitable. The combi-migration cell is temperature-resistant from -15 °C to 130 °C and pressure-tight up to 1 bar.
All stainless steel Central Rings of the „Sieg-Mi-Flex“ system for the migration simulation of differently sized sample pattern surfaces fit into the BorofloatBorofloat® glass fixation plate set of the Migration Cell System Siegwerk (Sieg-Mi-Flex).
Combi Migration Cell System-Siegwerk (Sieg-Mi-Flex) Borofloat® glass fixing plates and stainless steel Central Rings:
Stainless steel Central Rings:
| Item No.: | Nominal diameter: | Surface*: | Filling volume**: |
| 250-0235693 | DN120 | 1,00 / 2,0 dm² | 200 ml |
| 250-0342940 | DN110 | 0,95 / 1,9 dm² | 190 ml |
| 250-0218665 | DN100 | 0,75 /1,5 dm² | 150 ml |
| 250-0342926 | DN90 | 0,60 / 1,2 dm² | 120 ml |
| 250-0218672 | DN80 | 0,50 / 1,0 dm² | 100 ml |
| 250-0218689 | DN70 | 0,35 / 0,7 dm² | 70 ml |
| 250-0218696 | DN60 | 0,25 / 0,5 dm² | 50 ml |
| 250-0218702 | DN30 | 0,05 / 0,1 dm² | 10 ml |
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* Approx. surface with 1 test specimen/with 2 test specimens ** Approx. filling volume of the central ring |
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Stainless steel Central Ring (VA 1.4571) for the Siegwerk „Sieg-Mi-Flex“ Migration Cell System
consisting of:
- 1 x stainless steel central ring (V4A 1.4571) with cast-in and cast-out connecting pieces with GL14 threads
- 2 x FEP/silicone O-rings that fit in the central ring’s groove (top and bottom)
- 2 x GL14 seal caps (PPS housing incl. PTFE/sil. gasket)
Borofloat® glass fixing plate set for the Migration Cell System-Siegwerk (Sieg-Mi-Flex) consisting of:
- 2 x Borofloat® glass plates with drill holes, protective inserts for screws
- 4 x stainless steel screws(M8) with stainless steel knurled screws
- 4 x pin thread M8, stainless steel V4A 1.4571
- 4 x PTFE-thresded feet, white (M8)
The Kombination Migration Cell is temperature-resistant -15 °C to 130 °C and pressure-tight up to 1 bar.
