| Requirements | Unit | Specification |
| pH at room temp.& 180˚ F | _ | 6.5 |
| Specific gravity | _ | 4.7 min |
| Residue on ASTM sieve | No. 200 | % | 3 max |
| Residue on ASTM sieve | No. 300 | % | 10 + 5 |
| Water soluble solids | % | 0.1 max |
| Magnetic attraction | Wt % | 5 max |
| Soluble alkaline earth | Metal as calcium | ppm | 250 max |
Mineral
Hematite
CY MAX weight material is a high-quality, CY MAX with a Specific Gravity (SG) of 5.11 or above. Due to this high specific gravity, muds formulated with CY MAX have lower solids contents and frequently contribute to higher rates of penetration as compared to barite muds. It may be substituted for, or blended with, barite in all mud systems. CY MAX is ground and processed to remove impurities then classified to achieve the desired particle size distribution.