Certification and Registration
ISO 16620 Biobased Content Testing of Plastics — Testing of the Biobased Content of Plastics
Category:
USDA BioPreferred Program for Biobased Products
ISO 16620 Standard Description
ISO 16620 Biobased Content Testing of Plastics
The ISO 16620 standard includes:
ISO 16620-1 Plastics - Biobased content - Part 1: General principles
ISO 16620-2 Plastics - Biobased content - Part 2: Determination of biobased carbon content
ISO 16620-3 Plastics - Biobased content - Part 3: Determination of biobased synthetic polymer content
ISO 16620-4 Plastics - Biobased content - Part 4: Determination of biobased mass content
ISO 16620-5 Plastics - Biobased content - Part 5: Declaration of biobased carbon content, biobased synthetic polymer content and biobased mass content
These ISO standards apply to plastic products, polymer resins, monomers, or additives manufactured from bio-based or fossil-based feedstocks.
ISO 16620-2 Introduction
ISO 16620 addresses the determination of the bio-based content of plastics. ISO 16620-2 is the second part of the ISO 16620 series and focuses on the determination of bio-based carbon content in plastics.
ISO 16620-2 specifies the calculation method for determining the bio-based carbon content of monomers, polymers, plastic materials, and products based on measurements of carbon-14 (¹⁴C) content.
ISO 16620-2 applies to plastic products and plastic materials, such as plasticizers and modifiers.
Polymer resins, monomers, and additives may be derived from either bio-based or fossil-based feedstocks. Determining the bio-based content of plastic products provides valuable information for evaluating their environmental impact.
ISO 16620-2 Applicable Users
ISO 16620-2 specifies the determination of bio-based carbon content in plastics and is applicable to:
● Plastic product manufacturers
● Plastic manufacturers
● Quality control personnel
Why Use ISO 16620-2?
Increasing the use of biomass resources in the production of plastic products can effectively reduce greenhouse gas emissions and decrease dependence on fossil resources.Current plastic products may consist of bio-based synthetic polymers, fossil-based synthetic polymers, and natural polymers, and may also contain additives derived from bio-based materials.
“Bio-based plastics” refer to plastics containing all or part of their materials derived from biological sources. The “bio-based content” of bio-based plastics is defined as the proportion of carbon derived from biological sources, the proportion of bio-based synthetic polymers, or the mass fraction of bio-based materials.
ISO 16620-2 provides definitions and symbols related to bio-based carbon content and provides guidance on sampling procedures.ISO 16620-2 helps determine carbon-14 (¹⁴C) content, total carbon content, and total organic carbon content. It also provides guidance on calculating bio-based carbon content and preparing test reports.Furthermore, ISO 16620-2 assists in determining the bio-based carbon content of monomers, polymers, plastic materials, and finished products.
ISO 16620-2 Test Method
Method A: Liquid Scintillation Counting (LSC)
Method B: Beta Ionization (BI)
Method C: Accelerator Mass Spectrometry (AMS)
|
Method |
Additional Requirements |
Required measurement time |
Relative standard deviation |
Tooling costs |
|
Method A (LSC) |
General laboratory |
4-12 hour |
2%-5% |
Low |
|
Method B (BI) |
Low-background laboratory, gas purification system |
8-24 hour |
0.2%-5% |
Low |
|
Method C (AMS) |
Large-scale installation, graphite conversion equipment |
10-30 minute |
0.2%-2% |
High |
AMS Testing Method Introduction
AMS (Accelerator Mass Spectrometry) is a high-precision technique used to measure the ratios of radioactive isotopes. This technology is widely applied in various fields.
AMS is used to measure the ratios of different elements, including but not limited to carbon, beryllium, aluminum, calcium, iodine, chlorine, and actinides.
Other Relevant Carbon-14-Based Bio-Based Content Testing Standards
ASTM D6866 applies to all types of products (solid, liquid, and gas).
ISO 19984 applies to rubber and rubber products, including polyurethane.
EN 16640 applies to all bio-based products.
EN 16785 applies to any carbon-containing solid, liquid, or gaseous products.
EN 16766 applies only to bio-based solvents.
EN 16807 applies only to bio-based lubricants.
EN 17228 applies to bio-based plastics and plastic products.
SATISFY provides one-stop ISO 16620 testing and USDA BioPreferred® bio-based certification services, including preliminary feasibility assessments, preparation and submission of relevant documentation, monitoring of the testing and certification process, compliant labeling guidance, and post-certification follow-up.
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