Quality & Certification
Certified, tested
and traceable
Distributors and importers don't just buy slabs — they buy compliance for their market. Every Auro Quartz program is backed by recognised certifications, independent lab testing, batch-level color control and full export documentation. Here is exactly what we test, certify and ship with your order.
Our certifications
Four credentials your market asks for
Certificates and test reports are issued in our factory's name and can be provided per order, per batch or per destination market. Ask for copies before you commit — we send them, not promises.
Food Equipment Materials
Our slabs are certified to NSF/ANSI 51 for use as food-contact surfaces. The non-porous resin matrix does not harbor bacteria, mold or mildew, which makes the material suitable for kitchen counters, food-prep stations and commercial catering environments.
Annual NSF audit · certificate available on request
GREENGUARD / Indoor Air Quality
Tested for low VOC emissions so the finished surface is safe for sensitive indoor environments — homes, schools, hospitals and healthcare fit-outs. Limits follow recognised indoor-air-quality thresholds for enclosed spaces.
Emissions test report · VOC data sheet
Quality Management System
Our factory operates an ISO 9001 quality management system. Every order is traceable from raw quartz lot to finished slab, with documented control points at mixing, pressing, curing, calibration and polishing.
ISO 9001 certificate · documented QMS
SGS Independent Testing
Physical and chemical properties — water absorption, flexural strength, abrasion, stain and chemical resistance — are verified by SGS, an independent third-party laboratory. Test reports accompany shipments where required for import compliance.
SGS test reports per batch / per market
The numbers
Technical specifications
Engineered quartz is roughly 93% natural quartz bound in a high-performance resin. That composition is what gives the surface its near-zero porosity, hardness and stain resistance — the properties below are the ones fabricators and specifiers check first.
| Property | Value |
|---|---|
| Quartz content | ≥ 93% Natural quartz aggregate; balance is resin + pigment |
| Water absorption | ≤ 0.02% Effectively non-porous — no sealing required |
| Flexural strength | ≥ 45 MPa Resists cracking under load and during fabrication |
| Mohs hardness | 6 – 7 High scratch resistance for daily use |
| Heat resistance | up to ~150°C Use trivets; avoid direct thermal shock on resin binder |
| Stain resistance | Class A Wine, coffee, oil and most household chemicals wipe clean |
| Slab size | 3200 × 1600 mm Jumbo format for fewer joints on large runs |
| Thickness | 12 / 20 / 30 mm Standard production thicknesses |
How we control quality
Five checkpoints, every batch
The number-one complaint distributors have about imported quartz is color drift between reorders. We control it with documented batch records and a ΔE color tolerance read against a master reference — so the slab you reorder matches the one you sold.
Incoming Quartz Inspection
Each lot of quartz aggregate is checked for color, granulometry and moisture before it enters the mix.
Batch Mixing & ΔE Color Check
Pigment dosing is logged per batch. Cured reference tiles are read against a master under a calibrated light box; batch color must hold to a tight ΔE tolerance.
Slab Calibration & Flatness
After pressing and curing, slabs are calibrated to thickness and checked for flatness and edge integrity.
Surface & Defect Scan
Every slab is inspected for pinholes, voids, vein registration and polish quality before grading.
Pre-shipment QC & Documentation
Final grade, packing audit and batch records. SGS / certificate copies are matched to the order before the container is sealed.
Batch color you can resell with confidence
We retain master reference tiles for every active color and read each new batch against them under controlled lighting. Reorders are matched within a tight ΔE tolerance and the batch ID travels with your documentation — no guessing on the next container.
Silica safety & compliance
We take crystalline silica seriously
Engineered quartz contains crystalline silica, and cutting or grinding it dry releases respirable dust linked to silicosis. Regulators are tightening fast — Australia banned engineered stone containing silica from 1 July 2024, and OSHA (US) and the EU enforce strict exposure limits. A serious supplier ships the safety information that keeps your fabricators compliant. We do.
Bottom line: never dry-cut engineered quartz. Use wet processing with on-tool dust extraction, and follow the SDS and fabrication guide that ship with your order.
We supply an SDS with every shipment
Each order ships with a Safety Data Sheet covering respirable crystalline silica (RCS) content and the controls fabricators should apply when cutting, grinding or polishing.
Wet-cutting & dust-control guidance
We recommend wet processing (water-fed tools), on-tool LEV extraction and that no dry cutting be performed. Our fabrication guide spells out the safe-work method our partners should follow.
Aware of tightening regulation
Australia banned the use of engineered stone containing crystalline silica from 1 July 2024, and the US (OSHA) and EU enforce strict RCS exposure limits. We help importers understand what applies in their market.
Low-silica & mineral-filled options
For markets moving away from high-silica engineered stone, we can quote lower-silica and alternative mineral-filled formulations on request.
Get the catalog, specs and certificates
Tell us your market and we'll send the full color catalog, technical data sheets, SDS and copies of the certifications you need to import — before you place an order.