All five start from the same turmeric rhizome extract. What separates them is assay, particle size and carrier — and each of those is a manufacturing choice, not a marketing tier.
| Grade | Total curcuminoids | Curcumin share | Particle size | Water |
|---|---|---|---|---|
| Standard 95% | ≥95% | 70–75% | 80 mesh | Insoluble |
| High-assay 98% | ≥98% | 75–80% | 80 mesh | Insoluble |
| Micronized 95% | ≥95% | 70–75% | D90 ≤ 20 µm | Insoluble, dispersible |
| Water-dispersible 5% | 5% on carrier | ~3.7% | Spray-dried | Disperses |
| Water-dispersible 10% | 10% on carrier | ~7.4% | Spray-dried | Disperses |
Grades are stocked to the specifications shown; batch values are on the COA.
Water-dispersible powder is not a like-for-like substitute. The 10% grade is roughly ten times more powder for the same active load, and the carrier takes up capsule space or adds to the beverage solids. Choose it because the application needs dispersion, not because the number looks smaller.
Highest active load per gram, lowest excipient burden. Choose 98% when the capsule size is fixed and you need the last few percent. Micronized if content uniformity is a problem at low dose.
Curcumin is oil-soluble enough to suspend in carrier oils with lecithin. Particle size matters more than assay here — coarse powder settles.
No sediment, acceptable haze, colour stable at acidic pH. Expect an orange tint and a carrier contribution to solids and taste.
Colour strength per gram is the spec, not assay. Ask for a colour-value range and a sample against your matrix — pH shifts the hue toward red-brown.
Oil-soluble colour and antioxidant positioning. Micronized for even dispersion in emulsions; check odour and heavy metals for leave-on use.
Palatability and dust are the usual complaints — granulated grade reduces dust in premix plants.
Curcumin is practically insoluble in water — under 1 µg/mL at neutral pH. No powder makes it truly soluble; a water-dispersible grade makes it dispersed: fine particles stabilized by a carrier so they stay suspended instead of settling or floating.
D90 is the particle size below which 90% of the powder falls. An 80-mesh powder (about 180 µm) and a micronized powder (D90 ≤ 20 µm) can carry the same assay and behave completely differently: suspension stability, dissolution rate, content uniformity at low dose, dust, and even colour perception.
If flow, dust or dispersion is your problem, ask for the full distribution — D10, D50 and D90 — not just the mesh size. A "passes 80 mesh" statement tells you the top end, not the shape of the curve.
We send 100 g of the quoted grade for evaluation, with the batch COA. Freight is quoted separately. MOQ and sample policy →
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