Interface module for filter integrity testing

An apparatus, comprising:

• a testing device having an outlet for introducing a pressurized gas to a filter device, the filter device comprising a housing and a porous material to be tested;
• and
• an interface module removably attached to the testing device, the interface module comprising:
• a first flowpath communicating with the outlet of the testing device and the housing of the filter device;
• a first valve disposed in the first flowpath;
• a second flowpath communicating with the housing of the filter device and an exhaust;
• a second valve disposed in the second flowpath;
• and
• an enclosure enclosing the first flowpath, the first valve, the second flowpath, and the second valve, wherein the interface module further comprises a first outlet configured to connect the first and second flowpaths with the housing of the filter device via an elongate tube, and a second outlet configured to connect the second flowpath to the exhaust.

A method of testing a filter device, comprising:

• connecting a testing device with a filter device via an interface module, wherein the interface module comprises:
• a first flowpath communicating with an outlet of the testing device and a housing of the filter device, a first valve in the first flowpath, a second flowpath communicating with the housing of the filter device and an exhaust, a second valve in the second flowpath, and an enclosure enclosing the first flowpath, the first valve, the second flowpath, and the second valve;
• and
• conducting an integrity test on the filter device, wherein
• a pressurized gas is introduced from the testing device to the housing of the filter device via the first flowpath of the interface module;
• and
• at least a portion of the pressurized gas in the filter device is vented to the exhaust via the second flowpath of the interface module.