ISO 3251 Non-Volatile Matter (NVM) Content Testing
ISO 3251 is an international standard that specifies a method for testing the impact resistance of paint films. ISO 3251 is a series of standards that cover various aspects of paint and coating testing, including adhesion, hardness, and corrosion resistance. Compliance with these standards can help ensure the quality and durability of painted surfaces and coatings, and can help prevent failures and defects in the field.
TRUSTED BY
Precision-driven testing for dimensional accuracy and compliance
- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
ISO 3251 Overview
ISO 3251 is a standard test procedure used to measure the non-volatile residue left behind in paints, varnishes, binders, resins, and similar materials. The testing procedure is carried out by heating the sample to burn off volatile materials, such as solvents and moisture. The non-volatile residue is then weighed.
The purpose of this testing is to measure the non-volatile residue left behind in the coatings and polymer dispersions. The non-volatile residue is essentially the material left behind in the coatings and other materials. The exact measurement of the non-volatile residue is required to maintain consistency and stability in coatings and other materials.
Scope, Applications, and Benefits
Scope
ISO 3251 testing evaluates:
- Ash content (% by weight)
- Inorganic filler and reinforcement content
- Material purity and contamination levels
- Residual mineral composition after combustion
- Quality consistency of polymer materials
Applications
- Quality control of paints and coatings
- Evaluation of resin formulations
- Determination of solids content in coating materials
- Adhesive and sealant formulation testing
- Process control in coating manufacturing
- Research and development of coating systems
- Polymer dispersion analysis
- Raw material and finished product inspection
Benefits
- Accurate determination of solid content in coatings
- Ensures consistency in coating formulations
- Supports process optimization in manufacturing
- Helps control film thickness and coating performance
- Standardized testing methodology
- Improves product quality and reliability
ISO 3251 Test Process
Sample Preparation & Weighing
A representative sample is thoroughly mixed for uniformity, and a specified amount is weighed into a pre-weighed dish or container.
1Controlled Heating
The sample is heated in an oven at a specified temperature to evaporate volatile components such as solvents and moisture.
2Cooling and Reweighing
After heating, the dish is cooled in a desiccator and weighed again to determine the mass of the remaining residue.
3Data Interpretation
The percentage of non-volatile matter (solid content) is calculated based on the mass of residue remaining after heating.
4ISO 3251 Technical Specifications
| Parameter | Details |
|---|---|
| Applicable Materials | Paints, varnishes, resins, adhesives, sealants, and polymer dispersions |
| Typical Test Temperature | Usually around 105°C to 125°C depending on material type |
| Measured Property | Non-volatile matter (solid content) |
| Output Units | Percentage of non-volatile content (%) |
| Sample Requirement | Small representative liquid or semi-liquid sample |
Instrumentation Used for Testing
- Laboratory drying oven
- Analytical balance
- Weighing dishes or sample containers
- Desiccator
- Temperature control system
- Laboratory spatulas and sample preparation tools
Results and Deliverables
- Non-volatile matter percentage (%)
- Solid content determination report
- Quality control documentation
- Batch comparison analysis
- Coating formulation verification
- Reports
Frequently Asked Questions
ISO 3251 is a standard test for determining the amount of solid, non-volatile matter present in paints, coatings, varnishes, adhesives, and resins. The test involves heating the test substance to evaporate the volatile matter, such as solvents and moisture, and weighing the residue.
The non-volatile matter refers to the part of the substance that does not evaporate when the test substance is heated. The non-volatile matter present in coatings and resins refers to the part of the substance that remains behind when the substance dries.
Manufacturers use the non-volatile matter present in paints, coatings, varnishes, adhesives, and resins to control the thickness of the coatings, ensure consistency, test the quality of the formulations, and test the performance properties of the paints, coatings, varnishes, adhesives, and resins.
The measured quantity is then heated in an oven at a predetermined temperature to remove volatile materials. After heating, the sample is left to cool down. The sample is then weighed to determine the percentage of non-volatile materials present.
In most cases, the sample is heated to about 105°C to 125°C. The temperature is determined according to the testing conditions as stated in the standard.
Why Choose Infinita Lab
for Electron Energy Loss
Spectroscopy (EELS)?
At the core of this breadth is our network of 2,000+ accredited labs in the USA, offering access to over 10,000 test types. From advanced metrology (SEM, TEM, RBS, XPS) to mechanical, dielectric, environmental, and standardized ASTM/ISO testing, we give clients unmatched flexibility, specialization, and scale. You are not limited by geography, facility, or methodology – Infinita connects you to the right testing, every time.
Looking for a trusted partner for Electron Energy Loss Spectroscopy (EELS) Testing?
Send query us at hello@infinitlab.com or call us at (888) 878-3090 to learn more about our services and how we can support you.
Request a Quote
Submit your material details and receive testing procedures, pricing, and turnaround time within 24 hours.
Quick Turnaround and Hasslefree process
Confidentiality Guarantee
Free, No-obligation Consultation
100% Customer Satisfaction
