Blaine’s air permeability apparatus
To determine the fineness of cements, pozzolanas and other powdery materials, various international specifications recommend the use of "specific area" method. In the instrument described below, air permeability method is used to determine the specific surface as total surface area in cm2/g of material. Air Permeability Apparatus (Blaine Type) is with ISI Certification Mark, IS:5516
Tile Abrasion Testing Machine
The tile sample is pressed under a specified load against a grinding path, strewen evenly with an abrasive powder, revolving at the rate of 30 ± 1 rpm. At the end of 100 revolutions of the disc, the second parallel side of the tile is subjected to wear an equal number of revolutions of the disc. The wear of the tile is measured using AIM48101 thickness measuring device (which is supplied at extra cost). The Abrasion Testing Machine consists of a replaceable grinding path, fitted on to a disc rotating about its vertical axis. The rotating disc and the grinding path are enclosed by a circular tray. A bracket holds the specimen. The loading is by a counterbalanced lever. A funnel is provided to facilitate charging the grinding path with abrasive powder. Supplied complete with automatic pre-set revolution counter and one 7.5 kg weight, but without abrasive powder and thickness measuring device.