Test Types

Explanation of the different methods applicable to analyzing samples.

Wet/Dry

Collect a wet curve from a wetted sample. Immediately collect a dry curve from the same sample without operator intervention. The flow applied during the wet curve must completely dry the sample.

Bubble Point

Pore Size Distribution

• Complete data set with very limited operator involvement

• Potential for a dry curve — and therefore pore size distribution — to have lower accuracy if the wet curve measurement did not reach a pressure high enough to empty all pores

Dry/Wet

Collect a dry curve on an untreated sample. Wet the sample and collect a wet curve.

Bubble Point

Pore Size Distribution

• Greatest confidence in dry curve — and therefore pore size distribution — accuracy

• Requires operator intervention during the experiment to wet the sample

Wet/Calculated Dry

Collect a wet curve from a wetted sample. The dry curve is calculated by fitting the high pressure end of the wet curve that represents dry behavior.

Bubble Point

Pore Size Distribution

• Fastest measurement, lowest gas consumption

• Avoids dry curve errors associated with re-wetting

• Indirect measurement of dry flow

Bubble Point Only

Measures bubble point (size of largest pore) from a wetted membrane.

Bubble Point

 

• Quick measurement of key membrane characteristic