About Toll Company, Minneapolis Specialty Gas Supplier Since 2010, Toll Gas has been affiliated with PurityPlus® Specialty Gases, achieving PurityPlus certification for our superior manufacturing processes. Our Minneapolis laboratory is supported by the in-house Gas Technology Team. This specialized team takes the time to understand your applications, to provide you the best gas, package, and delivery system for your process. Toll offers a complete line of specialty gases filled to one quality standard at our ISO/IEC 17025:2005 accredited specialty gas laboratory and production facility. Toll’s custom-designed analytical testing can provide you with either a Certificate of Conformance or a Certificate of Analysis. Custom blends, not a problem. Our blend cells can fill multi-component gas mixtures, based on your specifications. With this system, repeatability is a cinch and reliability an expectation.