LFGB certification testing process for household water purifiers in Germany
Date：2026-03-10 10:01:48 Classification
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For household water purifiers exported to Germany, all parts and materials that come into contact with water must comply with the requirements of LFGB (German Food, Tobacco Products, Cosmetics, and Other Daily Necessities Management Law).
1、 Core Preparation Before Testing: Splitting and Material Analysis
This is the most crucial step. The water purifier cannot be tested as a whole, and all water related components must be disassembled and classified.
1. Identification of water related components:
Shell/pipeline: PE pipe, PP cotton filter shell, plastic joint, faucet body.
Filter materials: activated carbon, PP melt blown filter cartridge, RO membrane, ultrafiltration membrane, ceramic filter cartridge.
Sealing components: silicone sealing ring, rubber gasket.
Metal components: stainless steel interface, copper valve core (pay attention to coating).
2. Material classification:
Classify components of the same material and color (such as all PP plastic components).
Different materials need to be inspected separately.
2、 Core testing projects
The LFGB testing of water purifiers is usually divided into two parts: material testing and overall hygiene testing.
1. Sensory testing
This is the most basic and rigorous test for LFGB.
Odor and Taste Testing: After passing water through the water purifier, let it stand at a specific temperature for a certain period of time to detect any odor or discoloration in the water. Germany has extremely low tolerance for the "plastic smell".
2. Full migration testing
Simulate the total amount of non-volatile substances released when the component comes into contact with water.
Test conditions: Distilled water is usually used to soak at different temperatures (room temperature, high temperature) and times (24h, 72h, etc.).
Limit: It is usually required that the migration amount be less than 10 mg/dm ² or 60 mg/kg.
3. Heavy metal migration test
For metal components and plastics containing metal additives.
Test items: precipitation amount of specific heavy metal elements such as lead, cadmium, chromium, nickel, mercury, etc.
4. Specific substance testing
Risk substances for specific materials:
Plastics: Bisphenol A (BPA), phthalates, styrene monomers, etc.
Rubber/silicone: nitrosamines, volatile organic compounds (VOCs).
Activated carbon filter: It is necessary to test the adsorption performance and whether it releases micro powder/pollutants.
3、 Detailed explanation of the processing procedure
Step 1: Application and Quotation
Fill out the application form and list the BOM (Bill of Materials) for all water related components.
The laboratory evaluates costs and cycles based on the number of components and material types.
Tip: If there are different suppliers of filter consumables (such as PP cotton, activated carbon), each supplier's material needs to be tested separately. *
Step 2: Send samples
Whole machine samples: Usually 1-2 whole machines need to be sent for laboratory water immersion testing (simulating real usage scenarios).
Component samples: If certain components are difficult to disassemble from the entire machine, additional loose parts need to be provided.
Step 3: Laboratory testing
1. Pre treatment: Clean the sample according to the standard.
2. Soaking: Use simulated liquid (water) for soaking and migration.
3. Instrument analysis: Use ICP-MS, GC-MS and other instruments to analyze the precipitate.
4. Sensory evaluation: Professional personnel conduct odor testing on the soaking water.
Step 4: Issue a report
After passing the test, the laboratory will issue a detailed test report.
Note: LFGB usually does not have a single "certificate", and the test report is the proof of compliance. Some institutions will issue a declaration of conformity.
4、 Cycle and Cost Reference
Cycle:
Conventional material testing: approximately 5-7 working days.
Testing with complex filter elements or complete machine: approximately 7-10 working days (simulating long-term immersion as needed).
cost
The cost depends on the quantity of materials. For example, if a water purifier is made of five materials: PP plastic, PE pipe, silicone ring, activated carbon, and RO membrane, the cost is the sum of the testing fees for each individual item. Usually ranging from one thousand to several thousand Chinese yuan.
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