Laboratory & Scientific Research

Laboratory & Scientific Research

Perma Pure offers a wide range of products that are used by researchers for a wide variety of applications.

Perma Pure offers a wide range of Gas Sample Drying products that are tailor made for your application. Perma Pure’s MD Series™ and PD Series™ dryers are the ideal choice for drying gas samples prior to analysis. Using our exclusive Nafion™ technology, Perma Pure dryers can reduce the sample dew point to as low as -45°C without any measurable loss of analytes. The exceptional corrosion resistance of Nafion™ allows for the conditioning of harsh samples, even those rich in acids like HF and HCl.

Fast. Self-regenerating. No power requirement. MD Series™ and PD Series™ dryers are the ideal choice when accurate analysis of a gas sample is required. A brief review of each is shown below:

Gas Sample Drying
Flow Rates 0-4 lpm

Gas Sample Drying
Flow Rates 1-40 lpm

Gas Humidification
Flow Rates 0-10 lpm

Hot Gas Sample Drying
Flow Rates to 1 lpm

selector-md selector-pd selector-me selector-mdh

MD Dryer Series

The MD (Monotube Dryer) Series transfers moisture from one gas stream to a counter-flowing dry purge gas stream, much like a shell-and-tube heat exchanger transfers heat, using one Nafion™ tube. A wide range of lengths and tube diameters is available to cover the sample gas flow ranges shown below. Note: A dry purge gas source is required to remove the moisture.

Recommended Sample Gas Flow Rates:
0-0.2 lpm: MD-050 Series
0.1-2 lpm: MD-070 Series
1-4 lpm: MD-110 Series

MD-R Dryer Series

The MD-R (Monotube Dryer, Rotating) Series transfers moisture from one gas stream to a counter-flowing dry purge gas stream, much like a shell-and-tube heat exchanger transfers heat, using one Nafion™ tube. This series offers the advantage of rotating purge fitting ends, making it easier to install in your equipment. A wide range of lengths and tube diameters is available to cover the sample gas flow ranges shown below. Note: A dry purge gas source is required to remove the moisture.

Recommended Sample Gas Flow Rates:
0-0.2 lpm: MDR-050 Series
0.1-2 lpm: MDR-070 Series
1-4 lpm: MDR-110 Series

PD Dryer Series

The PD (Polytube Dryer) Series transfers moisture from one gas stream to a counter-flowing dry purge gas stream, much like a shell-and-tube heat exchanger transfers heat, using multiple Nafion™ tubes. These are chosen when the MD dryers do not offer the flow capacity required. A wide range of lengths and tube diameters is available to cover the sample gas flow ranges shown below. Note: A dry purge gas source is required to remove the moisture.

Recommended Sample Gas Flow Rates:
2-10 lpm: PD-050T Series
4-20 lpm: PD-100T Series
10-40 lpm: PD-200T Series

MD-H Heated Dryer

The MD-H Heated Dryer Series transfer moisture from one gas stream to the atmosphere using a single Nafion™ tube. These are typically chosen when the sample gas only needs to have its humidity equalized to the atmospheric RH. A wide range of lengths and tube diameters is available to cover these applications:

0-0.2 lpm: ME-050 Series
0.1-2 lpm: ME-070 Series
1-4 lpm: ME-110 Series

Environmental Control of Test Chambers or Incubators -Perma Pure’s ME Series is an ideal choice to humidiy

Fuel Cell and Alternative Energy Research

Medical Research

Test APP Data – Dryer selection by flow and dewpoint