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| Specification of Unwashed Powder Grades | |||||||
| Properties | P-100 | P-150 | P-200 | P-250 | P-280 | P-320 | |
| M B Value | Mg/g | 100 | 150 | 200 | 250 | 280 | 320 |
| KMno4 | %min | 25 | 25 | 45 | 55 | 60 | 70 |
| Ash | %max | 25 | 15 | 10 | 10 | 10 | 10 |
| Iron (ppm) | max | 1000 | 1000 | 800 | 800 | 600 | 500 |
| Acid Soluble (HCL) | %max | 10 | 10 | 10 | 10 | 10 | 10 |
| Water Soluble | %max | 5 | 5 | 3 | 2 | 2 | 1 |
| L.O.D | %max | 10 | 10 | 10 | 10 | 10 | 10 |
| C1 & SO4 | max | ……………….……USP…….. ……………………… |
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| Ph | …………………..Alkaline………………………………. | ||||||
| Particle Size | ………98 % Passes through 100 Mesh ………. | ||||||