Test record
TheRectangular Liner
Reusable silicone air fryer liner. 2 pack.
- Laboratory
- TÜV Rheinland (Suzhou) Co., Ltd.
- Tested against
- German §31 LFGB, materials in contact with food
- Report number
- 304194021a 001
- Tested
- 10 to 14 October 2026
- Report issued
- 19 October 2026
- Samples
- Sent by us. The laboratory tested randomly selected pieces.
The same report also covers The Circular Liner, made from the same black silicone.
The 7 tests, in plain English
- 1
Polycyclic aromatic hydrocarbons (PAHs)
Whether these substances, which can form in some rubbers and plastics, pass from the silicone into food. Tested in isooctane for 4 hours at 60°C.
PassNone detected. Each of the 15 substances was below the 0.01 mg/kg reporting limit.
- 2
Smell and taste
Water was kept in the liner for 2 hours at 100°C, then compared by tasters with water that had never touched it, on a scale from 0 (no difference) to 4. A score of 3 fails.
PassSmell 0. Taste 0. No perceptible difference.
- 3
Overall migration
How much material in total passes into substances that stand in for food: a mild acid (4 hours at 100°C), a dry stand-in for fatty food (2 hours at 175°C) and an alcohol solution (4 hours at 100°C).
PassUnder 2, 3 and under 2 mg/dm², against a limit of 10.
- 4
Catalyst residue
Whether platinum used in making silicone is left behind in the finished material.
PassNot detected, below the 10 mg/kg reporting limit. The limit is 50.
- 5
Remaining peroxides
Whether peroxides used in curing are left in the silicone. None are permitted.
PassNone detected, below the 0.01 percent reporting limit.
- 6
Volatile organic substances
How much of the silicone escapes as volatile substances when heated for 4 hours at 200°C.
PassBelow 0.1 percent, against a limit of 0.5 percent.
- 7
Colour transfer
Whether any colour passes from the black silicone into water, a mild acid, an alcohol solution or oil.
PassNo colour transfer in any of the four.
It covers
- The black silicone the liner is made from, as a material that comes into contact with food.
- The samples we sent to the laboratory. The results relate to those samples.
It does not cover
- The heat rating on the pack. The tests ran at up to 200°C.
- How the liner wears over years of use.