What is the difference between a Luer Lock and a Leur Slip tip syringe?
• Luer-Lok fittings are securely joined by means of a tabbed hub on the female fitting which screws into threads in a sleeve on the male fitting. Luer-Slip fittings simply conform to Luer taper dimensions and are pressed together and held by friction (they have no threads). My regulator doesn’t seem to fit Aldrich gas bottles. • Sigma-Aldrich always recommends using our own regulators with the gas bottles we supply. Most of our gas bottles and cylinders have US based dimensions and may not always be compatible with other brands of regulators or control valves.