2021BS ISO 13319-1:2021 Determination of particle size distribution. Electrical sensing zone method. Aperture/orifice tube method
2007BS ISO 13319:2007 Determination of particle size distributions. Electrical sensing zone method
BS ISO 13319-1:2021 Determination of particle size distribution. Electrical sensing zone method. Aperture/orifice tube method was changed to BS ISO 13319:2007 Determination of particle size distributions. Electrical sensing zone method.