EN 15347 Recycled Plastics Sampling and Sample Preparation
The European standard EN 15347:2009 specifies the procedures for sampling and preparing samples of recycled plastics intended for recycling into secondary products. This standard ensures that recycled plastic materials are accurately represented in their entirety, thereby maintaining the integrity of the supply chain and facilitating quality control throughout the recycling process.
The importance of proper sampling cannot be overstated, as it directly impacts the reliability of the subsequent testing results. According to EN 15347, a representative sample must reflect the characteristics of the entire batch of recycled plastics. This involves selecting a subset that is statistically significant and unbiased. The process starts with defining the population from which the samples are drawn, ensuring that it encompasses all relevant variations within the material.
The standard outlines several methods for sampling depending on the type and size of the plastic pieces. For example, when dealing with small granules or flakes, a random sampling technique is recommended. This ensures that every portion of the batch has an equal chance of being selected. Conversely, larger components may require stratified sampling to account for potential variations in quality across different parts of the batch.
Sample preparation is equally critical as it prepares the sample for testing according to other relevant standards such as ISO 14852 or ASTM D7613. Properly prepared samples should be free from contaminants and in a form suitable for analysis. This might involve sieving, grinding, or washing depending on the nature of the plastic material.
The accuracy of recycled plastics is paramount given their widespread use in various applications ranging from food packaging to automotive parts. Ensuring that these materials meet stringent quality standards not only enhances product performance but also reduces environmental impact by promoting sustainable practices.
| Step | Description |
|---|---|
| Sampling | Define the population, select a representative sample using appropriate techniques (random or stratified), and document the process. |
| Sample Preparation | Cleanse, sieve, grind if necessary, and ensure that the sample is in a form suitable for testing. |
| Testing Compliance | Prepare samples according to relevant standards such as ISO 14852 or ASTM D7613 for further analysis. |
The implementation of EN 15347 contributes significantly to the reliability and consistency of recycled plastic materials. By adhering strictly to this standard, laboratories can provide accurate and reproducible results that are essential for effective quality management and regulatory compliance.
In summary, EN 15347 serves as a critical foundation in ensuring the quality of recycled plastics through meticulous sampling and sample preparation processes. It plays an integral role in maintaining high standards within the recycling industry, fostering trust among stakeholders, and promoting sustainable practices.
Applied Standards
The application of EN 15347 is primarily focused on recycled plastics intended for secondary product manufacturing. This standard ensures that the sampling and preparation methods used are consistent with international best practices, thereby enhancing the accuracy and reliability of subsequent test results.
Some key standards that complement EN 15347 include:
- ISO 14852: This standard provides guidelines for mechanical testing methods applicable to recycled plastics. It covers a wide range of tests including tensile strength, impact resistance, and elongation at break.
- ASTM D7613: Also known as the Standard Test Method for Determining the Density of Recycled Plastics, this standard offers precise procedures for measuring bulk density using various techniques.
- EN 92504: This European norm specifies requirements and test methods for determining the percentage by mass of non-recyclable materials in recycled plastics. It helps manufacturers ensure their products meet specified purity levels.
The combination of these standards ensures a comprehensive approach to assessing the quality of recycled plastics, covering not only sampling and preparation but also mechanical properties, density determination, and impurity content.
By adhering to such stringent protocols, organizations can build confidence in their products while simultaneously contributing positively towards environmental conservation efforts. This holistic strategy supports sustainable development goals by reducing waste streams and encouraging circular economy principles.
Scope and Methodology
| Aspect | Description |
|---|---|
| Sampling Location | Sample should be taken from various points within the batch to ensure representativeness. |
| Sampling Frequency | At least one sample per 10 kg of recycled plastics is recommended, but this can vary based on specific requirements. |
| Sample Size | The size depends on the type and intended use of the plastic. Typically ranges from 5 to 20 kg per sample. |
| Preservation Measures | To prevent degradation, samples should be stored in a cool, dry place protected from light exposure. |
| Preparation Steps | Initial cleaning followed by sieving or grinding if necessary to achieve uniformity. |
| Testing Compliance | Prepare the sample according to relevant standards such as ISO 14852 or ASTM D7613 for mechanical testing. |
| Data Reporting | All sampling and preparation activities must be documented accurately with timestamps and details of all steps taken. |
Sampling should commence immediately after the arrival of recycled plastics at the processing facility. From here, samples are collected from multiple locations within the batch to ensure they are representative. The frequency of sampling varies based on factors like batch size and intended use of the plastic material.
The sample size is determined by considering both practical considerations and analytical precision required for subsequent tests. Typically, between 5 kg to 20 kg per sample suffices depending upon the nature and volume of the recycled plastics being processed.
Preservation measures are crucial during storage as they help maintain the integrity of the samples until testing can be conducted. Samples must be kept in a controlled environment that minimizes exposure to environmental conditions which could lead to degradation or contamination.
Once collected, initial cleaning ensures that any foreign matter such as sand or metal particles do not interfere with subsequent analyses. Depending on the type and size of plastic pieces, further preparation steps like sieving or grinding may be necessary to achieve a homogeneous sample suitable for testing.
To ensure consistency across different batches, all sampling and preparation activities should be meticulously documented including timestamps and detailed descriptions of each step performed. This documentation forms part of quality assurance processes ensuring traceability throughout the entire supply chain process.
Eurolab Advantages
At Eurolab, we pride ourselves on offering comprehensive services tailored specifically to meet the stringent requirements set forth by EN 15347. Our team of experts ensures that every aspect of sampling and sample preparation adheres strictly to this standard, providing accurate and reliable results.
We employ advanced equipment designed explicitly for handling recycled plastics ensuring precision during all stages from collection to analysis. Our laboratories are equipped with state-of-the-art analytical instruments capable of performing a wide array of tests including mechanical property determinations according to ISO 14852 or ASTM D7613.
Our experienced staff comprises highly qualified professionals who possess deep knowledge and expertise in recycled plastics testing methodologies. They stay updated with the latest developments ensuring compliance with evolving regulatory requirements.
The benefits of partnering with Eurolab extend beyond mere technical proficiency; it includes access to cutting-edge facilities, robust quality assurance processes, and dedicated customer support. We strive to deliver exceptional service consistently meeting or exceeding expectations set by our clients.
