DESCRIPTION
Chemical Name: Amorphous Aluminum Silicate aka Dental Pumice
Amorphous (non-crystalline) in structure and composed primarily of aluminum silicate, pumice is a naturally calcined volcanic glass foam consisting of highly vesicular strands permeated with tiny air bubbles. It is these frothy, friable glass vesicles that, when carefully refined to various grades, give pumice its unique and infinitely useful qualities.
| PARTICLE SIZE SPECIFICATION - Medium Grit | |||
| SIZE | ALLOWABLE PERCENT PASSING | ||
| Micro (MM) | US MESH | ||
| 250 [0.25] | 60 | 99.5-100 | |
| 180 [0.18] | 80 | 85-95 | |
| 150 [0.15] | 100 | 67-83 | |
| 106 [0.106] | 140 | 40-65 | |
| 75 [0.075] | 200 | 28.42 | |
