LEVEL OF VACUUM ULTRA HIGH VACUUM Greater than 10-4 Torr DRY PFEIFFER HELIUM LEAK DETECTORS New Sort By Position Product Name Price Manufacturer Type Level of Vacuum CFM / L/M (Displacement) Sniffing Helium Leak Detector Adixen ASM 306S ASM306S RSAS00A0MM9A Request a Quote Portable Helium Leak Detector Adixen ASM 340 ASM340 Multipurpose. Compact, Std Base Model. Two Year Warranty. NEW JSVA00A2ML9A Request a Quote Portable Helium Leak Detector Adixen ASM 310 ASM310 Compact, 50% Lighter Than Conventional Units. High Performace, Dry. NEW BSAA0200MM9A Request a Quote Helium Leak Detector Adixen ASM 390 ASM390 Mobile, High Performance. Rapid Pump Down. Semi S2 Compliant. Turbo Pump. Two Year Warranty CSGB01G2MM9A Request a Quote Helium Leak Detector Adixen ASM 392 ASM392 Mobile, High Performance. Rapid Pump Down. Semi S2 Compliant. Two Turbo Pumps. ESGB02G2MM9A Two Year Warranty Request a Quote