ISI MARK CERTIFICATION FOR CEMENT Is ISI Mark Compulsory for Cement ? All varieties of Cement such as Sulphate Resisting Portland Cement, Low heat Portland Cement, Portland Pozzolana Cement-Part1 Fly-ash based, Portland Pozzolana Cement-Part 2 Calcined clay based, Ordinary Portland Cement, Masonry Cement, Portland Slag Cement, High Alumina Cement for Structural use, Super Sulphated cement, Rapid hardening Portland cement, White Portland Cement, Oil well Cement are mandatory to be tested and certification under the Bureau of Indian Standards (BIS, Govt. of India) as per their Indian Standards. Aleph INDIA with its two sister companies Aleph Industrial Corporation and Aleph Accreditation & and Testing Cerntre (P) Ltd. provides services that helps the manufactures to get their product certification without any hassle as per BIS norms.