QUALITY
Consistency is the product
Buyers rarely change filler supplier for price. They change because a lot drifted. Our quality system is built around holding the same numbers, consignment after consignment.
Tested on every lot
| PARAMETER | METHOD / INSTRUMENT |
|---|---|
| Particle size distribution | Laser diffraction, d50 / d97 |
| Brightness & whiteness | Reflectance photometer |
| Chemical assay | Titration / wet chemistry |
| Moisture content | Loss on drying, 105°C |
| Oil absorption | Spatula rub-out method |
| pH of slurry | 10% aqueous suspension |
| Residue on sieve | Wet sieve analysis |
| Coating level | Loss on ignition |
| Bulk & tapped density | Gravimetric |
| Iron content | Colorimetric Fe₂O₃ |
How we hold a specification
Approved specification, then locked
A grade is agreed once against the customer's own requirement, and that window becomes the standard every subsequent lot is tested to.
Blending at the mine face
Ore is selected and blended before it reaches the mill, because chemistry cannot be corrected downstream.
Separate carbonate and silica lines
Dedicated plants end to end, so a whiteness-critical grade never runs behind an abrasive one.
Trial lot before volume
A 25 kg trial runs on the customer's line first. Volume supply only starts once the formulation is confirmed.