The Bayerteq Nabertherm carbon black tester consists of an aluminium frame combined with a high class oven to be configured dependant on standard choice. Tests may be performed for the determination of the carbon black content of thermoplastic materials, such as: polyethylene, polypropylene and polybutene. The carbon black content is determined by means of weight difference. The Carbon Black equipment comprises the electric tube furnace and a side panel. The front panel of the electric tube furnace displays the controls needed to operate the furnace and automatic temperature control. The electric tube furnace is for heating the combustion pipe in which the shuttle is inserted with the sample to be tested. The purpose of the side panel is to support the outside components, namely: the flow meter, the flow control valve, the washing bottle and the drying tube. The Carbon Black equipment has been designed and made according to the requirements of the standards: ASTM D1603 and ISO 6964 and serves to determine the carbon black content of thermoplastic materials, such as polyethylene, polypropylene and polybutene. The carbon black content of the material examined is carried out gravimetrically after pyrolysis in nitrogen stream. The method of determination indicated by standards consists in calculating the difference in weight of the sample before and after treatment in the equipment. This method is not applicable to materials that contain non volatile pigments or inorganic. The Carbon Black complies with the standards ASTM D 1603 and ISO 6964.

A sample of known weight is placed into a weighed combustion boat. The sample is then placed into a 600°C tube furnace under a dry oxygen free Nitrogen purge. After a set time the combustion boat with the burn residue is cooled under the nitrogen purge and weighed. The combustion boat is then placed into a 600°C muffle furnace to oxidize the carbon residue. When the carbon is completely oxidized the combustion boat is cooled and weighed.