100 helium for sale, brand-new and used.

Alpha Omega Instruments Series 3000 Trace Oxygen Analyzer Powers on, and the LEDs and LCD work properly. Unable to further test without additional equipment. Very minor scratches on the clear plastic front cover, otherwise in great physical condition.

HeNe Laser Power Supply Laser Drive Inc. model number 380T-2700-3900-6.5-4 This new, re-labeled power supply will operate a typical 18 to 25 inch long HeNe laser. Hook-up info is on the label.

Union Carbide Gas Mixer Plate - 21M Helium & 19C Nitrogen Mixing Valves. This unit is working perfectly & comes f

Compression fittings on both ends. In Factory box and sealed in plastic. University Surplus.

Process Gas Box, Stainless Steel used for Nitrogen Many other inert and other applications. Has explosion proof glass, exhaust port and holes for bulkhead fittings. Have many other valves including AP Tech, Swagelok, Regulators (AP Tech) and items not included inn this auction.

QTY. 1. VARIAN 938-41 PORTA LEAK DETECTOR, MODEL: 938-41, S/N: BDBAL6011026, 115 VAC.

Harris Model 25GX-500-580 HVAC Purging Regulator. Made in the USA. This single-stage nitrogen purging regulator is designed for performance and economy, but with features typically available in more expensive regulators.

Nupro Swagelok SS-4BRG Bellows-Sealed Valve Gasketed Regulating Stem Tip 1/4 in.

Spectra Physics Model 132 Class 3 Helium-Neon (HeNe) Laser 132-M Used. With Optics for Research microscope objective lens LMO-60X. Front enclosures has a first surface mirror/lens.

Pall Mini-Gaskleen GLFPF3000VMM4 1/4" Filter The Mini Gaskleen Hi-Flow filter assembly is designed for ultra

All items are sold as is without warranty unless specifically stated in the posting. This does not mean that the unit doesn’t work, only that we have not tested or checked it out. This may also mean that we are not knowledgeable in this specific item.

NEW Setra 225G100PGC42CB1 Ultra-High Purity Pressure Transducer Comes with what you see in the pictures. If you don't see it, you probably won't get it. Specifications are from Setra and may vary slightly due to upgrades, options, or revisions this unit may or may not have.

For sale: MKS P99A Integrated Pressure Controller Model P99A12TCRBAT Ideal for critical process pressure control for production or R&D applications. Device was working properly when removed from an experimental wafer cooling module and is in excellent condition. Very low total hours of operation.