Carbon sulphur apparatus is used to detect percentage of Carbon and sulphur in iron and steel. The scale of apparatus burette is directly calibrated in terms of carbon percentage. The apparatus can detect carbon percentage up to 4.5%. By using interchangeable burettes, the measurement can be taken to 0.25%, 0.5%, 1.5% and 4.5%. Th apparatus furnace attains required temperature rapidly and a high accuracy digital pyrometer indicates the furnace temperature. The equipment can detect carbon or sulphur or both.