Spectrovial® Ball Pestles
Ball pestles serve as the grinding media in conjunction with SpectroVials® for comminution in SpectroMill Ball Pestle Impact Grinders. The selection of an appropriate ball pestle is a function of its relative hardness to the sample substance, vial material and dimensions.
Plastic methylmethacrylate ball pestles are intended to be used with plastic polystyrene SpectroVials. By comparison to metallic SpectroVials and their corresponding ball pestles, plastic is relatively soft and imparts limited effectiveness and efficiency to the comminution process.
Stainless steel ball pestles are primarily used for comminuting medium to hard sample substances in stainless steel SpectroVials. For comminuting very hard samples, tungsten carbide ball pestles in combination with titanium carbide SpectroVials are much more effective grinding media.
The effectiveness of the comminution process to achieve an analytically acceptable particle size is a function of the initial sample charge; volumetric capacity of the vial and material; number of ball pestles and processing time. Empirical testing and evaluation is recommended to ascertain the best statistically reproducible x-ray analytical data.
Specifications and Ordering Information
Plastic methyl Methacrylate
| CATALOG NO |
DIAMETER, mm |
QTY/PKG |
| 1205 |
5 |
100 |
| 1207 |
7 |
100 |
| 1208 |
8 |
100 |
| 1211 |
11 |
100 |
Stainless Steel
| CATALOG NO |
DIAMETER, mm |
QTY/PKG |
| 1245 |
5 |
6 |
| 1247 |
7 |
6 |
| 1248 |
8 |
6 |
| 1251 |
11 |
6 |
| 1252 |
12.7 |
6 |
Tungsten Carbide
| CATALOG NO |
DIAMETER, mm |
QTY/PKG |
| 1235 |
5 |
6 |
| 1236 |
7 |
6 |
| 1237 |
8 |
6 |
| 1238 |
11 |
6 |
| 1239 |
12.7 |
6 |
Agate
| CATALOG NO |
DIAMETER, mm |
QTY/PKG |
| 1280 |
12.7 |
2 |
