For door manufacturers, the coating used on a door surface is an important part of overall product quality. Beyond appearance and durability, coating composition and volatile organic compound (VOC) content can also be important considerations when selecting materials for interior door applications.
Zonle Doors uses water-based acrylic matte varnish as a coating material, and a laboratory test was conducted to evaluate its volatile organic compound (VOC) content.
According to the test report, the tested water-based acrylic coating had a VOC content of 6.7%, meeting the specified technical requirement of less than 10.0%. The test result was classified as Qualified.
What was the VOC result of the tested water-based acrylic coating?
The tested water-based acrylic matte varnish had a VOC content of 6.7%, compared with the technical requirement of <10.0%. The test conclusion was Qualified. The test was conducted according to GB/T 23986.2-2023.
The product tested was identified in the report as water-based acrylic coating matte varnish.
The sample was described as a colorless, translucent liquid, with approximately 300 g submitted for testing. The manufacturer and entrusting company listed in the report was our material partner. The report number is TW243303-1W1.
The report contains one tested item: volatile organic compounds (VOC).
| Test Item | Technical Requirement | Test Result | Conclusion | Test Method |
|---|---|---|---|---|
| Volatile Organic Compounds (VOC) | <10.0% | 6.7% | Qualified | GB/T 23986.2-2023 |
The measured result of 6.7% is below the specified limit of 10.0%, so the tested sample met the technical requirement for this test item.
VOC, or volatile organic compounds, refers to organic compounds that can evaporate into the air under specified conditions.
For a coating material, VOC content is one of the measurable characteristics that can be used to evaluate the formulation against a specified technical requirement.
In this test, the laboratory measured a VOC content of 6.7%, while the applicable requirement stated in the report was less than 10.0%. Therefore, the sample passed the specified VOC test.
It is important to distinguish this result from a claim that the finished door is completely VOC-free or that the entire door has been certified as low-VOC. This report specifically concerns the tested water-based acrylic matte varnish sample, rather than providing a complete environmental assessment of an assembled door.
The report identifies GB/T 23986.2-2023 as the test method for the VOC determination.
The report also records the laboratory's analytical conditions, including the use of gas chromatography for VOC determination. The report notes that VOCs were classified according to the designated marker (DEA), with acetonitrile used as the extraction solvent and a combination of CSRF and alternative calibration materials used for quantification.
These details provide traceability for how the reported VOC result was obtained.
A door's surface coating serves more than an aesthetic purpose. The coating can contribute to the finished surface appearance and forms part of the material system used on the door.
For door buyers, developers, contractors, distributors, and wholesalers, material documentation can therefore be useful when evaluating a door supplier.
Depending on the project, buyers may need information such as:
Coating material specifications
VOC test results
Product test reports
Fire performance documentation
Material certifications
Quality management certifications
Production and factory information
Providing supporting documentation helps buyers understand the materials used in a product instead of relying solely on general marketing claims.
Water-based acrylic coatings are used in a range of coating applications where surface appearance and coating properties need to be considered together.
The tested product in this report is specifically identified as a water-based acrylic matte varnish. Its tested VOC result of 6.7% met the report's specified requirement of less than 10.0%.
For door projects, coating selection should still be evaluated together with the complete door construction, substrate, manufacturing process, intended application, and applicable project requirements.
The key information from the laboratory report is summarized below:
| Item | Details |
|---|---|
| Product | Water-Based Acrylic Coating Matte Varnish |
| Test Item | Volatile Organic Compounds (VOC) |
| VOC Requirement | <10.0% |
| Test Result | 6.7% |
| Conclusion | Qualified |
| Test Method | GB/T 23986.2-2023 |
| Report Number | TW243303-1W1 |
| Test Date | October 24–25, 2024 |
| Report Issue Date | October 29, 2024 |
The report was issued by National GoldSun (Changzhou) Test & Certification Technology Co., Ltd.
Based on the report, the following statement is supported:
The tested water-based acrylic matte varnish sample recorded a VOC content of 6.7%, meeting the specified requirement of less than 10.0% under the reported test method.
However, this report should not be interpreted as evidence that every Zonle Doors product has the same VOC result, because the report states that the test is applicable to the submitted sample. The report also notes that the testing is responsible for the sample received by the laboratory.
This distinction is important for transparent technical communication and helps B2B buyers evaluate certification and test documentation accurately.
For international door projects, product quality is not determined by appearance alone. Material selection, manufacturing processes, testing, certifications, and technical documentation all contribute to a supplier's ability to support different project requirements.
At Zonle Doors, we provide a range of door solutions for international customers, including WPC doors, steel doors, wooden doors, glass doors, fire doors, garage doors, and customized door solutions.
For project-specific requirements, buyers can contact our team to discuss product specifications, materials, testing documentation, customization, and production requirements.
Looking for a reliable door manufacturer in China? Contact Zonle Doors for product details and factory pricing.