These NEW Agilent Varian 979, 959, and VS series Helium Leak Detector Cleaning Kit are for cleaning of the vacuum mass spectrometer tube. These kits include the VacuSolv wipes for cleaning which will not leave a residue in the mass spectrometer, lint free clothes, & other required cleaning items. These kits can be used with most Agilent Varian helium leak detectors, including the 979, 959, and VS series. Agilent Varian part number 670029096.