We offer traditional meter proving for all types of flow meters mainly in North Dakota, Montana, and the upper Midwest. We also offer proving services on the gulf coast. We follow MPMS chapters 4.8 for proving procedures and guidelines for acceptable results. We follow MPMS API chapter 5.2 through 5.8 for proving various types of meters. We use Flow-Cal's Prov-it software for collecting data and calculating the meter factors. We also provide meter factor control charts to monitor every meter we prove, and provide guidance when action levels are reached.