BS EN 12846:2002 Methods of test for petroleum and its products. Bitumen and bituminous binders. Determination of efflux time of bitumen emulsions by the efflux viscometer method
2011BS EN 12846-1:2011 Bitumen and bituminous binders. Determination of efflux time by the efflux viscometer. Bituminous emulsions
2002BS EN 12846:2002 Methods of test for petroleum and its products. Bitumen and bituminous binders. Determination of efflux time of bitumen emulsions by the efflux viscometer method