How do I obtain German LFGB certification for aluminum kitchenware?
Date：2026-01-04 10:21:09 Classification
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LFGB testing covers all materials, including products manufactured using the latest processes, such as: chrome plating on barbecue grills, temperature resistance testing of Teflon coatings on cooking pans, and silicone seal testing in kettles. The complete LFGB certification process for aluminum cookware in Germany:
I. Core Testing Standards and Items (Specific Requirements for Aluminum Products)
| Mandatory Tests | Testing Standards | Limit Requirements
| Sensory Testing | DIN EN 1230-2021 | No odor, no color migration to food smear liquid
| Heavy Metal Migration | LFGB §31 | Lead ≤0.01mg/kg, Cadmium ≤0.005mg/kg
| Coating Adhesion | ISO 2409-2020 | Cross-cut test ≤ Grade 1 (no coating peeling)
| Solder Joint Safety | EN 15205-2022 | Solder lead residue ≤50ppm
II. 6-Step Processing Procedure (Including Key Documents for Aluminum Products)
1. Document Preparation Checklist
Product Information:
Material Certificate (e.g., aluminum alloy grade 6061/5052, must contain manganese and magnesium content)
Surface Treatment Process Description (anodizing/hard anodizing/Teflon coating thickness ≥25μm)
Welding Process Diagram (indicates welding wire type, e.g., ER4043 aluminum-silicon welding wire) Template:
German Version Product Instruction Manual (must indicate "Nur für kulinarische Verwendung")
Declaration of Conformity (DoC) must include information of the EU responsible party (can be entrusted to a German importer)
2. Key Points for Laboratory Selection
DEZEW Testing CNAS Registration Number: L8083
3. Sample Submission Specifications
Quantity: Submit 3 sets of finished products of the same model (including lids, handles, and other accessories)
Pretreatment: Boil in deionized water for 30 minutes before testing (simulating first use)
Special Marking: Mark the material code on the bottom of the sample (e.g., "AlMg3" represents aluminum-magnesium alloy)
4. Testing Cycle and Fees
Basic Package (including sensory evaluation + heavy metals + coating testing): Cycle: 5-7 working days (3 days for expedited service, +60% fee) Fee: ¥1000-3000/model (20% surcharge applies to woks with diameter > 30cm)
Additional Testing Items:
Composite Pot Bottom (Aluminum + Stainless Steel): +¥800 (Interface Migration Test)
Colored Coating: +¥500 (Azo Dye Test)
5. Report Review and Rectification
Common Non-Compliant Items:
1. Insufficient Anodized Layer Thickness (<15μm, resulting in excessive aluminum ion concentration)
2. Excessive VOCs Emission from the Silicone Sealing Ring on the Handle (>0.5mg/m³)
Rectification Solutions:
Increase oxidation time to 40 minutes (increase coating thickness to 30μm)
Replace with food-grade silicone (e.g., Dow Corning 734)
6. Knife and Fork Label Usage Guidelines
Size Requirements: Label height ≥ 5mm, must be clearly marked on the bottom of the product (do not affix to the handle).
Special Note: For sets, the smallest item must also be labeled (e.g., spatula, ladle).
III. Frequent Failure Cases and Prevention for Aluminum Kitchenware
| Failure Scenario | Technical Reasons
| Excessive Aluminum Ion Content After Boiling in Acidic Solutions | High Porosity of Oxide Film (>15%)
| Excessive Lead Migration at Welding Joints | Use of Lead-Containing Solder (e.g., Sn60Pb40)
| Metallic Odor Found During Sensory Testing | Incomplete Surface Degreasing (Residual Rolling Oil)
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