The HAP Journal
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171 to 22: What Twenty Minutes in an Autoclave Did to a Qualified Powder
Read more…: 171 to 22: What Twenty Minutes in an Autoclave Did to a Qualified PowderThe qualification dossier is signed — particle size, surface area, phase purity, all inside spec. Then the material goes to sterilisation. Two published studies asked whether what comes out is still the material you approved.
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“Meets ISO 13779.” The Standard Says It Does Not Apply to Powder.
Read more…: “Meets ISO 13779.” The Standard Says It Does Not Apply to Powder.A certificate of analysis arrives for a hydroxyapatite powder, and near the bottom sits the line that closes the deal: conforms to ISO 13779. Clause 1 of that standard says something the certificate does not.
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The Datasheet Says Hydroxyapatite. The Diffractogram Says Two Minerals.
Read more…: The Datasheet Says Hydroxyapatite. The Diffractogram Says Two Minerals.Two lots arrive, both labelled eggshell-derived hydroxyapatite, both made at the temperature the literature calls optimal. A published calcination study explains why “optimal” and “pure” were never the same word — and why the certificate you accept decides which one you bought.
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Four Trials Out of Sixty-Eight: What the Hydroxyapatite Evidence Actually Supports
Read more…: Four Trials Out of Sixty-Eight: What the Hydroxyapatite Evidence Actually SupportsA brand wants “clinically proven to remineralise” on the tube. The literature runs to thousands of papers — but the meta-analysis found only four trials it could use. What does the evidence actually license you to say?
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Two of the World’s Best Measurement Labs Sized the Same Particles — and Got Different Numbers
Read more…: Two of the World’s Best Measurement Labs Sized the Same Particles — and Got Different NumbersJapan’s NMIJ and America’s NIST measured the same bottle of reference particles with gold-standard instruments. The numbers disagreed. So what does the particle size on your supplier’s datasheet really mean?
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Nano-Hydroxyapatite Safety: The EU SCCS Opinion and What Brands Need to Know
Read more…: Nano-Hydroxyapatite Safety: The EU SCCS Opinion and What Brands Need to KnowThe EU’s Scientific Committee on Consumer Safety has reviewed nano-hydroxyapatite. Here is what its assessment means for brands using nano grades in cosmetics.
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Sourcing Hydroxyapatite: MOQ, Lead Times, and Specification Risk for Buyers
Read more…: Sourcing Hydroxyapatite: MOQ, Lead Times, and Specification Risk for BuyersBuying hydroxyapatite is a procurement discipline, not just a purchase. Here is how to weigh MOQ, lead times, documentation, and the specification risk that bites later.
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Hydroxyapatite in Bone Graft Substitutes: A Procurement Guide to Granules, Blocks, and Putties
Read more…: Hydroxyapatite in Bone Graft Substitutes: A Procurement Guide to Granules, Blocks, and PuttiesHydroxyapatite bone graft substitutes come as granules, blocks, and putties. Here is how the formats differ and what biomaterials procurement teams should specify.
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The Real Mechanism Behind Hydroxyapatite Whitening Toothpaste, Beyond Abrasion
Read more…: The Real Mechanism Behind Hydroxyapatite Whitening Toothpaste, Beyond AbrasionConventional whitening relies on abrasion or peroxide. Hydroxyapatite takes a gentler route, changing how enamel reflects light rather than scrubbing it.
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Formulating Hydroxyapatite Into Serums and Essences: Dispersion and Stability
Read more…: Formulating Hydroxyapatite Into Serums and Essences: Dispersion and StabilityAdding a mineral powder to a near-water serum is a real formulation challenge. Here is how to disperse, suspend, and stabilise hydroxyapatite in light skincare.