Helium Leak Testing A complete Helium Leak Test involves the monitoring of both the inboard leakage of an item and the outboard leakage of an item. Inboard leak tests are performed by drawing an internal vacuum on the equipment (under test), while surrounding it with helium, then monitoring the helium leakage rate from the outside to the inside. Outboard leak tests are performed by pressurizing the subject item with helium and analyzing the surrounding space for the presence of helium. Upon completion of the test, a certificate is written and forwarded with the item to the customer. In the case where 100% of the items are leak tested, a Certificate of Conformance can be requested for the item.
Ordering Information
Model Number	Description
MSP-0012-XX	Inboard Helium Leak Rate Certification
MSP-0013-XX	Combination Inboard/Outboard Helium Leak Rate Certification