LFGB Testing for Kitchen Knives: Scope, Test Items, Cost and Turnaround

📅 Sep 14, 2026 👁 views

LFGB is a German national food contact framework, and it has become the default testing standard that European retail buyers ask for even outside Germany. Understanding what it tests, what it costs and what it does not cover prevents both over-testing and a false sense of security.

This article explains the LFGB position for kitchen knives, the practical scope, and how to commission testing sensibly.

What LFGB is

Aspect	Detail
Full context	Food and Feed Code of the Federal Republic of Germany, and the associated recommendation documents for food contact materials
Status	A national requirement, widely adopted by European retail as a de facto specification
Role in the EU framework	National measures operate alongside the EU framework regulation; LFGB is the most commonly requested national scheme
Certification	There is no "LFGB certificate" issued by a government body. What exists is a test report from a laboratory, often with a statement of conformity
What it demonstrates	That the tested article meets the migration and sensory requirements applied by the laboratory under the specified conditions
What it does not demonstrate	That every unit of a batch performs identically, or that the tested article matches the production article if the material changed

What testing typically covers for a knife

Test category	What is examined	Relevance to a knife
Heavy metal migration	Migration of metals into a food simulant under specified conditions	The core test for the blade and any metal part in contact with food
Sensory or organoleptic testing	Whether the article imparts taste, odour or colour	Relevant for coated or printed components and for new handle materials
Overall migration	Total mass transfer	More relevant to plastics; sometimes requested in combination
Specific migration of individual components	Named substances	Relevant where a handle polymer contains additives of interest
Nickel release	Release from articles in prolonged skin contact	A separate test normally under the REACH restriction; often combined in European programmes
Colour fastness and transfer	Whether a dye or print transfers	Relevant for coloured handles and printed surfaces
Formaldehyde and other specific substances	Where the material is susceptible	Occasionally relevant for some handle materials and bonding systems

Scope: which components need testing

Component	In food contact zone	Typical testing	Cost driver
Blade steel	Yes	Heavy metal migration under a defined simulant and exposure regime	Number of elements and exposures
Bolster and ferrule	Yes	Heavy metal migration	Usually combined with the blade if the same material, separate if not
Handle polymer	Partially	Overall and specific migration, sensory	Number of components to identify
Handle wood	Partially	Sensory, and specific substances where a treatment is applied	Treatment chemistry must be disclosed
Coating on blade or handle	Yes if in the contact zone	Migration from the coating	Coating chemistry and thickness
Rivets and screws	Partially	Migration if exposed and in contact	Material
Adhesive at a joint	Potentially	Migration if it could be exposed	Adhesive chemistry
Print or marking ink	Potentially	Migration and transfer	Ink formulation

The most common inefficiency is testing a whole knife when the compliance question is about one component, or testing one component when the question is about the interaction. The right approach is to group tests by material and by whether the material is in the contact zone. A single blade of a given grade tested under the right conditions covers every knife in a range using that grade, provided nothing else in the contact zone differs.

Cost and turnaround reality

Scope	Relative cost	Typical turnaround	Reuse potential
Heavy metal migration, blade steel only	Low	Roughly one to two weeks	High — covers the whole range in that grade
Full knife, blade plus handle plus coating	Moderate	Two to four weeks	Moderate — per material combination
Add nickel release	Low to moderate increment	Adds a short period	Reusable per material
Add sensory and colour fastness	Low increment	Adds a short period	Reusable per material
New polymer handle with multiple additives	Higher	Longer, because of component identification	Reusable per material
Testing in a rush	A surcharge is common	Compressed	Not relevant

Concrete numbers depend on the laboratory, the element list and the number of exposures, and they change with the market. The important structural point is that testing a single grade of steel is cheap relative to testing a whole assembled product with several materials, and the result is reusable across a range. Treat the report as a durable asset, not a per-product expense. See one-off cost amortisation.

Design decisions that reduce testing scope

Decision	Effect on testing
One steel grade across the range	One migration report covers every knife in that grade
One handle material across the range	One handle test covers every SKU
No blade coating	Removes a whole test category
Uncoloured, unprinted handle	Removes colour fastness and transfer testing
Blade steel already tested by the factory with a valid report	Can avoid a new test entirely, subject to verification and permission
Adhesive fully enclosed in the joint	May remove the adhesive from the contact zone assessment
Introduction of a PVD coating	Adds a test category, plus determination of the coating composition

Verifying a factory's existing report

Factories frequently hold LFGB reports and offer to share them. Before relying on one, check:

Does the report name the material precisely, with a grade?
Does the material match what is being supplied now?
Does the report identify the supplier or the mill?
Are the test conditions appropriate for a kitchen knife — the simulant, temperature and exposure regime?
Is the report still valid, and has the factory changed supplier since?
Does the report cover all elements of concern, or only some?
Does the report cover the handle and any coating, or only the metal?
Will the factory allow the report to be referenced in the brand's declaration of compliance?

A report that answers all eight is worth more than a new test, because it is already available and it saves both cost and weeks. A report that fails any of the first four is not evidence of anything about the product being bought.

What LFGB does not do

It does not certify the factory.
It does not cover the packaging, which has its own regime. See packaging compliance.
It does not replace the EU declaration of compliance, which still has to be issued by the responsible operator. See EU food contact compliance.
It does not cover performance, sharpness, durability or safety claims.
It does not guarantee batch consistency. That comes from a material control system at the factory. See in-process quality control.

The last point matters. A migration test on a sample demonstrates that the material is capable of complying. It does not demonstrate that every production batch uses the same material. The test is a material qualification; batch consistency comes from the factory's incoming material control and traceability. If both exist, compliance is defended. If only the test exists, the first batch substitution defeats it.

Practical approach

Decide the material set and freeze it before commissioning testing.
Check whether the factory holds a valid report for each material before paying for new tests.
Test by material, not by product, wherever possible.
Include the handle and any coating or print in the scope.
Add nickel release if any exposed component contains nickel.
Record the report in the declaration of compliance and in the compliance file.
Require the factory to notify you before changing any material or supplier, and treat that as a trigger for re-verification.