Perma Pure
MD-Series Gas Dryers – Compact, Reliable Moisture Removal
Efficient drying for precise gas measurements
When moisture interferes with accuracy, Perma Pure MD-Series Gas Dryers provide a simple, maintenance-free way to remove water vapor from gas samples without affecting their composition.
Based on Nafion™ membrane technology, the MD-Series ensures that only H₂O passes through the membrane wall — delivering dry, stable samples for reliable analytical performance in laboratory, medical, and industrial applications.
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Niels Bay Petersen
+45 24 46 19 75
How It Works
Each MD-Series dryer uses Nafion™ tubing arranged in a compact, monotube design.
As the sample gas flows through the inner lumen, moisture selectively permeates through the Nafion™ wall and is continuously carried away by a purge gas or dry ambient air.
This unique design provides:
- High selectivity for water vapor only
- No moving parts or refrigerants
- No need for heating or cooling
- Chemical inertness and corrosion resistance
Because Nafion™ does not absorb or react with other gas components, it preserves true gas composition and ensures measurement integrity — even for reactive or corrosive samples.
Applications
- Continuous Emission Monitoring Systems (CEMS) – Convert hot, wet stack gas into a dry sample for precise analysis
- Biogas & Renewable Energy – Protect methane analyzers from condensation and corrosion
- Chemical & Petrochemical – Reliable conditioning of process gases
- Laboratory Analysis – Stable gas composition for research and quality control
- Medical & Life Sciences – Breath and metabolic gas drying for diagnostic systems
Benefits for You
- Accurate readings: Removes only water vapor — not analyte gases
- Low maintenance: No filters, pumps or refrigerants required
- Compact design: Easily integrated into existing sampling systems
- Chemical durability: Resistant to acids, bases, and solvents
- Energy efficient: Operates without external power or heating
Why It Matters
In gas analysis, moisture is the enemy of precision. Even small amounts of condensation can cause drift, corrosion, and unreliable data.
By integrating an MD-Series dryer, you ensure long-term analyzer protection, reduced calibration frequency, and accurate, repeatable results.
These products are used within these applications
Petrochemical
From maintaining precision in production processes to ensuring regulatory compliance and sustainability, your operations require reliable, cutting-edge solutions.
Industrial Gases
Summary
Biogas
Gas analysis plays a crucial role in improving the efficiency of a biogas plant by providing real-time insights into the composition and flow of biogas.