UNE-EN 993-1:2018 Methods of test for dense shaped refractory products - Part 1: Determination of bulk density, apparent porosity and true porosity (Endorsed by Asociación Española de Normalización in January of 2019.)
2019UNE-EN 993-1:2018 Methods of test for dense shaped refractory products - Part 1: Determination of bulk density, apparent porosity and true porosity (Endorsed by Asociación Española de Normalización in January of 2019.)
1996UNE-EN 993-1:1996 METHODS OF TEST FOR DENSE SHAPED REFRACTORY PRODUCTS. PART 1: DETERMINATION OF BULK DENSITY, APPARENT POROSITY AND TRUE POSORITY.