Standard
Reference standard:JIS Z 8901
＊Material used：
GBL：Soda lime glass
GBM：Barium-titanate glass
＊Chemical composition
GBL(Soda lime glass)
| Chemical composition | % ( mass ) |
| SiO2 | 70～73 |
| Na2O | 12～15 |
| CaO | 7～12 |
| MgO | 1～5 |
GBM(Barium-titanate glass)
| Chemical composition | % ( mass ) |
| TiO2 | 33～38 |
| BaO | 41～48 |
| SiO2 | 10～14 |
| CaO | 4～8 |
＊Particle density：
GBL‐2.1～2.5g/cm3
GBM‐4.0～4.2g/cm3
＊Particle size distribution
| class | Particle size at 90%,50%,10% oversize mass basis(%) on the cummulative distribution curve | ||
| 90% | 50% | 10% | |
| GBM 20 | 18 min. | 22±1.0 | 26 max |
| GBL 30 GBM 30 | 26 min. | 30±1.0 | 34 max |
| GBL 40 GBM 40 | 37 min. | 41±1.0 | 45 max |
| GBL 60 | 55 min. | 59±1.0 | 63 max |
| GBL 100 | 95 min. | 100±1.0 | 105 max |
＊Refractive index：
GBL: 1.51～1.53， GBM: 1.92～1.94
＊The non-spherical particle,opaque particle,agglomerated particle, and foreign matter are less than 5% in total.
Microscopic Photograph
Test Powders 2-GBL 60 （SEM）
Test Powders 2-GBM 40 （SEM）
Test Powders 2-GBM 20 （SEM）
Price
Air-freight charge and handling charge are added to prices in the list. Invoice will be sent for inquiry with required quantity and destination of the cargo. Delivery of cargo shall be made after confirming your payment to our bank account or Credit cards indicated in the invoice.