![]() ![]() This National survey not only represents a collaboration between NIST and NCWM but also represents a multi-purpose effort involving numerous state and local jurisdictions. The purpose of this survey is three-fold: 1) to collect contemporary data from the 2022 marketplace comparing the actual tare weight of a cylinder to the stamped tare weight 2) to evaluate the Methods of Sale and fill procedures used at Direct Sale Refilling Locations and 3) to determine net content compliance. Thus, to ensure “Equity in the Marketplace,” the National Conference on Weights and Measures (NCWM), with support provided by the NIST Office of Weights and Measures (OWM), has initiated a National marketplace survey on LPG (Propane) 20 lb cylinders. State’s Weights and Measures authorities have found systematic and potentially significant problems with short weight (underfilled) 20 lb cylinders, but also with cylinders being filled beyond the safe capacity. The 20 lb LPG (Propane) cylinder is one of the more frequently used “convenience” products in U.S. Over 10 billion gallons of Liquefied Petroleum Gas (Propane) were sold last year alone, including over 50 million individual cylinders of propane. ![]()
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