---
type: "WebPage"
title: "OECD 120 Testing : polymer behaviour in water"
description: "You would like to carry out an analysis of the behavior of your polymers in water according to OECD 120 OECD 120: dissolution behavior and stability of polymers Evaluate the persistence of your polymers and nanoplastics in aqueous environments with..."
resource: "https://filab.fr/en/our-services/our-analysis-services/polymer-materials-analysis-laboratory/test-for-polymer-behaviour-in-water-according-to-oecd-120/"
tags: ["EN", "pll_629f3be47e584", "Thomas GAUTIER"]
timestamp: "2026-03-02T08:36:43Z"
published: "2022-06-15T14:08:17Z"
language: "en"
author: "bwa"
---

# OECD 120 Testing : polymer behaviour in water

## You would like to carry out an analysis of the behavior of your polymers in water according to OECD 120

### OECD 120: dissolution behavior and stability of polymers

**Evaluate the persistence of your polymers and nanoplastics in aqueous environments with the OECD 120 test, a key step for environmental safety and material compliance.**

In an increasingly stringent regulatory context for microplastics and polymers, the OECD 125 guideline (formerly focused on density and now centered on dissolution/precipitation behavior) has become an essential tool for manufacturers in the plastics, chemical, and environmental sectors.

### Why is the OECD 120 test crucial?

The goal of OECD 120 is to determine the **dissolution behavior** of polymers in water. Unlike small molecules, polymers exhibit complex solubilization mechanisms linked to their macromolecular structure.

The implications for industry:

- **Characterization of nanoplastics**: understanding whether your polymer particles dissolve or remain solid in water.
- **Health and environmental safety**: identifying the potential release of oligomers or additives during dissolution.
- **Regulatory anticipation**: providing robust data for polymer registration dossiers (subject to increased monitoring by ECHA).

## The FILAB laboratory supports you in your analytical needs according to OECD 120

### Our technical means for analysis according to OECD 120

  [### COT-meter

For an overall measurement of dissolved organic matter.](https://filab.fr/nos-moyens-techniques/analyse-cot-metre-laboratoire.md) [### SEC

To determine the distribution of molar masses of the dissolved fraction.](https://filab.fr/nos-moyens-techniques/laboratoire-analyses-gpc-sec.md) [### HPLC-MS

To specifically identify and quantify monomers or additives that have migrated into the water.](https://filab.fr/en/our-technical-resources/laboratory-analysis-uplc.md)
### Our other nano services according to the OECD

[OECD 125 testing: Measurement of particle size and granulometric distribution of nanomaterials ](https://filab.fr/nos-prestations/expertise/laboratoire-analyse-nanomateriaux/ocde-125-particules.md)

[OECD 318 testing : stability analysis of nanomaterials](https://filab.fr/en/our-services/our-expertise-services/laboratory-analysis-nanomaterial/stability-analysis-nanomaterials-oecd-318.md)

[OECD 105 testing : solubility test ](https://filab.fr/nos-prestations/expertise/laboratoire-analyse-nanomateriaux/laboratoire-test-solubilite.md)

### Why use FILAB?

- **Mutual Recognition of Data (MAD)**: In accordance with OECD principles, the data generated by our laboratory is recognized by all OECD member countries. This avoids duplication of testing and facilitates your global exports.
- **COFRAC ISO 17025 accreditation**: a guarantee of scientific rigor, essential for the validity of your dossiers with ECHA.
- **Nanomaterials expertise**: our experts advise you on the most relevant testing strategy for your substance.

## Our other nanomaterials expertise services

The FILAB laboratory is ISO 17025 accredited by COFRAC for the characterization of nanomaterials!

 [Our accreditations](https://filab.fr/en/about-us/accreditations-en.md)
## To go further

[Analysis and research of microplastics in the laboratory](https://filab.fr/en/our-services/our-analysis-services/polymer-materials-analysis-laboratory/laboratory-analysis-microplastics/)

[Chemical analysis in the context of REACH](https://filab.fr/en/our-services/our-analysis-services/laboratory-reach-analysis.md)

[Analysis of chemical impurities](https://filab.fr/en/our-services/our-analysis-services/analysis-ich-q3d-context.md)

[Polymer analysis for the medical industry](https://filab.fr/en/our-services/our-analysis-services/polymer-materials-analysis-laboratory/polymer-analysis-for-the-medical-industry.md)

Determination of regulated substances: [heavy metals](https://filab.fr/en/our-services/our-analysis-services/laboratory-analysis-heavy-metal.md), [phthalates](https://filab.fr/en/our-services/our-analysis-services/chemical-analysis-laboratory/analysis-and-determination-of-phthalates-in-the-laboratory.md), [nitrosamines](https://filab.fr/en/our-services/our-analysis-services/laboratory-analysis-nitrosamines.md), bisphenol A, [residual solvents](https://filab.fr/en/our-services/our-analysis-services/voc-analysis-laboratory.md)

[Development and validation of chemical analysis methods](https://filab.fr/en/our-services/rd/life-cycle-of-an-analytical-method-in-the-laboratory/analytical-development/)

[Polymeric materials analysis laboratory](https://filab.fr/en/our-services/our-analysis-services/polymer-materials-analysis-laboratory.md)