Formula: BeO

Particle Size:   15 µm maximum

                         up to 4.4 µm - 90%

                         4.2 - 12.6 µm - 9%

Moisture Content: 0.2% maximum

Typical Analysis in Percent:

Minimum 99.85% BeO:

               Al                   0.01                                   B                     0.0003

              Cd                 0.0002                                Ca                      0.015

              Cr                  0.005                                 Co                     0.0005

              Cu                 0.002                                  Fe                      0.015

              Li                   0.0005                                Mg                      0.01

              Mn                 0.001                                  Mo                     0.0004

              Ni                   0.01                                    Pb                     0.001

              Si                  0.015

The total of impurity oxides is 0.15% maximum.

Minimum 99.5% BeO:

              Al                        0.025                                  B                         0.003

              Cd                       0.0002                                Ca                        0.05

              Cr                        0.015                                  Co                       0.0005

              Cu                       0.002                                  Fe                        0.05

              Li                         0.0009                                Mg                       0.01

              Mn                       0.0015                                Mo                       0.0004

              Ni                        0.015                                  Pb                        0.001

              S                         0.016                                  Si                         0.02

The total content of impurity oxides is 0.5% maximum.