CERTIFICATE
LOSS ON IGNITION 4% TO 6%
LOSS ON DRYING 0.05%
ACID SOLUBLE SUBSTANCE (AS SO4) 2%
EXTRACTABLE FLUORIDE 0.2%
Ph (at 10%) 8.5 % TO 9.5%
SOLUBLE SALTS 0.2%
ABSORPTION IN OIL 30 TO 35
ASBESTOS FIBERS NIL
ARSENIC NIL
SiO4 61 TO 66
MgO 29 TO 32
Fe 203 0.15
CaO TRACES
Al203 0.6%