1. European Committee for Standardization (CEN). (1996). Safety of machinery. Evaluation of the emission of airborne hazardous substances. Part 3: Emission rate of a specified pollutant. Bench test method using the real pollutant (Standard No. EN 1093–3:1996). Brussels, Belgium: Author.
2. International Organization for Standardization (ISO). (1991). Measurement of fluid flow by means of pressure differential devices–Part 1: Orifice plates, nozzles and Venturi tubes inserted in circular cross-section conduits running full (Standard No. ISO 5167–1:1991). Geneva, Switzerland: Author.