Items	Exellent Product	First-garde Product	Satisfactory Product
Molten colority,No. (plantinum-cobalt)max	20	50	100
Content(as MA)%min	99.5	99.0	98.5
Crystallizing point ℃ min	52.4	52.0	51.5
Ash % max	0.003	0.005	---
Iron content(as Fe)PPM max	5	---	---