[Kyle, Chandra]

Leak checked GV7 this evening by bagging GV nipple with mylar and inflating with helium at constant flow for 30 minutes. Oxygen sensor was used to verify air displacement. The leak checker detected a leak that crept up to 3.8 x 10^-9 Torr-L/s after several minutes, but then decreased while the bag was still saturated with He. Then we opened the valve and slowly soft closed again (all while maintaining He flow). During the stroke the He signal in leak detector continued to drop. We may have been detecting He from migration. We depleted an entire (small) bottle.