Introduction
This document by INTERNORMEN Technology GmbH focuses on the importance of filtration in hydraulic and lubricating oil systems. It highlights that contaminants larger than 1 micron can cause significant disturbances, emphasizing the necessity of permanent filtration to ensure system safety and efficiency.

Why Filtration?

• Prevents system downtime due to component failure from contaminated solids.
• Increases the service life of systems and fluids.
• Ensures economic efficiency by reducing maintenance costs.

Filtration Efficiency
The document explains the calculation of filtration efficiency using the filtration quotient, with an example showing a 99.5% efficiency. It also discusses dirt-holding capacity according to ISO 16889, which varies with pressure differences.

Contamination Classes
Contamination classes are determined based on system sensitivity, with recommendations for filter materials to achieve necessary cleanliness levels. The document provides a table correlating ISO 4406:99 and NAS 1638 standards with recommended filter materials.

Filter Media

• Interpor Fleece "VG" Glass Fibre: Offers deep filtration and high particle-holding capacity, suitable for various oils.
• Paper Matting "P": Composed of paper and polyester, available in specific micron ratings.
• Stainless Steel Mesh "G": Provides surface filtration with high resistance, partially cleanable.

Quality Assurance
INTERNORMEN Technology ensures product quality through ISO 9001 standards, with rigorous testing and quality control according to various ISO standards, including collapse/burst resistance and flow fatigue characteristics.

Laboratory Evaluation
The document details the use of modern laboratory techniques for contamination analysis, including online particle counting and water analysis. It emphasizes the importance of testing filter elements according to ISO standards.

Conclusion
INTERNORMEN Technology provides high-quality filtration solutions backed by extensive testing and quality assurance, ensuring optimal performance and longevity of hydraulic and lubricating systems.