P2O5                                                      24% Min

TCP                                                         53% Min

CaCO3                                                    15% Max.

SiO2                                                        15%Max.

Cl2                                                          0.5 % Max.

CaF2                                                       3% Max.

R2O3                                                      3%Max.

MgO                                                       1,5%Max

Humidity at 105 C                      3%Max.

Size particles                                        Over 3 mm  10%

                                                                Under 3mm 90%