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| Cornish Way | |
| Barbot Hall Industrial Estate | |
| Rotherham | |
| South Yorkshire | |
| S62 6EG | |
| Tel: 44 (0) 1709 362523 | |
| Fax: 44 (0) 1709 369045 | |
| E-mail: roth@gowerchemicals.ltd.uk | |
| Web site: www.gowerchemicals.ltd.uk |
| SULPHURIC 98% VLSI GRADE |
| COMPONENT | SPECIFICATION | ||
| Particles (above 0.5µm) | 25/ml | ||
| Assay | 97.0 - 99.0% m/m | ||
| Colour | 10 Hazen Units maximum | ||
| Non-volatile matter | 3 | ppm maximum | |
| Substances reducing | |||
| Permanganate | (O) | 2 | ppm maximum |
| Ammonium | (NH4) |
1 | ppm maximum |
| Chloride | (Cl) | 100 | ppb maximum |
| Nitrate | (NO3) |
200 | ppb maximum |
| Phosphate | (PO4) |
500 | ppb maximum |
| Aluminium | (Al) | 20 | ppb maximum |
| Antimony | (As) | 10 | ppb maximum |
| Arsenic | (Sb) | 10 | ppb maximum |
| Barium | (Ba) | 10 | ppb maximum |
| Beryllium | (Be) | 10 | ppb maximum |
| Bismuth | (Bi) | 50 | ppb maximum |
| Boron | (B) | 20 | ppb maximum |
| Cadmium | (Cd) | 10 | ppb maximum |
| Calcium | (Ca) | 50 | ppb maximum |
| Chromium | (Cr) | 10 | ppb maximum |
| Cobalt | (Co) | 10 | ppb maximum |
| Copper | (Cu) | 10 | ppb maximum |
| Gallium | (Ga) | 10 | ppb maximum |
| Germanium | (Ge) | 10 | ppb maximum |
| Gold | (Au) | 20 | ppb maximum |
| Iron | (Fe) | 50 | ppb maximum |
| Lead | (Pb) | 10 | ppb maximum |
| Lithium | (Li) | 10 | ppb maximum |
| Magnesium | (Mg) | 50 | ppb maximum |
| Manganese | (Mn) | 10 | ppb maximum |
| Molybdenum | (Mo) | 20 | ppb maximum |
| Nickel | (Ni) | 10 | ppb maximum |
| Platinum | (Pt) | 50 | ppb maximum |
| Potassium | (K) | 50 | ppb maximum |
| Silver | (Ag) | 10 | ppb maximum |
| Sodium | (Na) | 100 | ppb maximum |
| Strontium | (Sr) | 20 | ppb maximum |
| Thallium | (Tl) | 50 | ppb maximum |
| Tin | (Sn) | 50 | ppb maximum |
| Titanium | (Ti) | 50 | ppb maximum |
| Vanadium | (V) | 10 | ppb maximum |
| Zinc | (Zn) | 50 | ppb maximum |
| Zirconium | (Zr) | 50 | ppb maximum |