Laboratory Test Results
Verified by Independent Accredited Laboratories
Delivery packaging should not add risk to the food it carries. ProThermo™ bags were tested for heavy metals, aromatic amines and total migration by a CNAS-accredited independent laboratory, working under ISO/IEC 17025:2017.
ISO/IEC 17025:2017
GB 4806.13-2023 · CNAS/ILAC-MRA
Materials tested and certified by accredited laboratories · No direct food contact required
Accredited & Certified By
Thermal Retention Performance
The ProThermo™ multi-layer insulation keeps food temperature for 45 minutes in transit. Material safety was tested with food simulants at 70°C for 2 hours, the worst-case food-contact scenario, per GB 4806.13-2023.
Migration Test Results
All migration parameters tested fall well below regulatory thresholds. Each bar shows the actual measured result as a proportion of the maximum allowable limit — the smaller the bar, the safer the material.
Chemical Safety Analysis
Every material layer is independently tested for hazardous substances via Inductively Coupled Plasma Mass Spectrometry (ICP-MS) at parts-per-billion sensitivity. Zero tolerance for carcinogenic compounds.
Testing Methodology
The laboratory follows a 4-phase procedure: sample preparation, simulant exposure, instrumental analysis and the final report. The results below come from test report no. 2513406917.
Material Sampling
Random specimens are extracted from each production batch under controlled conditions. Samples are sealed and tracked with unique lot identifiers to ensure chain-of-custody integrity.
Chemical Spectrometry
Specimens undergo Inductively Coupled Plasma Mass Spectrometry (ICP-MS) to detect heavy metals at parts-per-billion sensitivity, alongside gas chromatography for aromatic amine screening.
Migration Testing
Food simulants are applied at the temperature and duration set by the standard: 70°C for 2 hours, the worst-case food-contact scenario for ProThermo™.
Compliance Verification
Results are compared against the GB 4806 series limits, and the CNAS-accredited laboratory (ISO 17025) issues the test report.
Standards Glossary
Verifiable definitions of the applicable certification standards
- CNAS
- China National Accreditation Service for Conformity Assessment — China's laboratory accreditation body, the functional equivalent of UKAS in the UK or A2LA in the US. Its accreditation is globally recognized through ILAC-MRA.
- ILAC-MRA
- International Laboratory Accreditation Cooperation Mutual Recognition Arrangement — A multilateral agreement ensuring that test results from CNAS-accredited labs are accepted in 100+ countries, including all EU member states.
- GB 4806.13-2023
- China's national food-contact safety standard for composite materials. It regulates total migration, heavy metals and sensory properties. It is not an EU standard.
- EU 1935/2004
- The EU framework regulation on materials and articles intended to come into contact with food. It sets general safety requirements and authorizes specific measures for different material types (plastics, metals, textiles, etc.).
FAQ
Who certifies the materials?
All SvartxLab materials are subjected to rigorous testing via CNAS and ILAC-MRA accredited independent laboratories, specifically Fangyuan Test (方圆检测). We do not self-certify — every result is verifiable through the accreditation body.
What temperatures are the bags tested at?
Migration tests use food simulants at 70°C for 2 hours, the worst-case food-contact scenario under GB 4806.13-2023. The 45-minute thermal retention is the product's stated performance under standard delivery conditions.
Do the bags comply with EU Regulation 1935/2004?
ProThermo™ was tested to China's GB 4806 series at a CNAS/ILAC-MRA accredited laboratory; these are not tests under EU regulations. They are transport bags: they do not package the food directly. If your audit requires EU documentation, contact us and we will review it with you.
What does the GB 4806 standard cover?
GB 4806 is China's national series of food-contact safety standards. ProThermo™ was tested to GB 4806.13-2023 (composite materials) and GB 4806.7-2023 (plastics), covering total migration, heavy metals, potassium permanganate and sensory evaluation.
Are SvartxLab bags BPA-free?
Absolutely. Our multi-layer insulation system uses no Bisphenol A (BPA) in any composite layer. This is independently verified during the aromatic amine and specific migration testing phase of our CNAS certification process.
Food-Grade Paper Cup Compliance
Calix™ PE Line Certifications
Every Calix lidless paper cup with PE alimenticio coating is manufactured in an ISO 9001:2015 certified facility and independently tested to meet the strictest European food safety standards.
LFGB
PE LinecalixCertLfgbDetail
ISO 9001:2015
PE LinecalixCertIsoDetail
FDA Registered
PE LinecalixCertFdaDetail
Future Calix Eco Line
The upcoming Calix Eco line (water-based barrier coating) is backed by SGS Biodegradation testing (86.8%/180 days) and Sinolight Recyclability testing (98/100 score).
Need the Test Report for Your Audit?
Ask us for the full test report (no. 2513406917) and we will send it with the product data sheet.