China Best XRD Quartz Sample Holder Manufacturers & Exporter for San Miguel

Standard fused quartz glass, although chemically pure ($>99.99\%\text{ SiO}_2$), possesses an amorphous atomic arrangement. When irradiated by X-rays (such as Cu-K$\alpha$), this amorphous network generates a massive diffuse scattering hump centered between $15^\circ$ and $30^\circ\ 2\theta$, which can completely mask low-intensity reflections from nanomaterials, pharmaceutical hydrates, or low-concentration catalysts.

In contrast, a Zero-Background Quartz Holder (ZBH) is sliced from a single crystal of alpha-quartz along a specific non-diffracting crystallographic plane (such as cut along $(510)$ or $(012)$). Because there are no lattice planes oriented to satisfy Bragg's Law ($\lambda = 2d\sin\theta$) within standard scanning angles, coherent scattering is absent, yielding an exceptionally clean baseline (< 5–10 cps) critical for trace phase detection and quantitative Rietveld refinement.

Well depth selection depends directly on sample volume availability and the linear X-ray absorption coefficient ($\mu$) of your material:

• Zero Depth (Flush Polished Surface): Ideal for micro-gram quantities, precious pharmaceutical APIs, or trace biological powders suspended in volatile solvent and dropped onto the surface (smear mount).
• 0.1 mm to 0.2 mm Depth: Standard recommendation for organic materials, low-density compounds, and limited-yield chemical syntheses, preventing beam penetration to the substrate while saving sample volume.
• 0.5 mm to 1.0 mm Depth: Ideal for heavy minerals, cement clinkers, ceramic powders, and metallurgical samples in San Miguel's heavy industrial labs to ensure infinite sample thickness conditions.

Yes. As an independently verified OEM/ODM custom manufacturer, our CNC machining center routinely crafts quartz sample plates to arbitrary geometries, including non-standard square plates, stepped circular discs, off-center multi-cavity arrays, and capillary holder assemblies. You can provide a 2D PDF drawing, 3D STEP file, or simply specify the instrument brand and model (e.g., Bruker, Rigaku, PANalytical) with desired cavity dimensions. Minimum order quantity for fully customized geometries starts from just 1 piece.

For research and quality control consumables dispatched to San Miguel and surrounding regions, we provide priority international air express (DHL, FedEx, UPS) with transit times typically ranging from 3 to 5 business days from our factory dispatch to laboratory doorstep. Standard inventory sizes ship within 48 hours; custom CNC milled holders require 7 to 10 days for precision slicing, ultrasonic cavity etching, optical polishing, and cleanroom packaging.

We deploy rigorous multi-tier export packaging engineered specifically for optical crystals: each quartz disc is enclosed in a cleanroom dust-proof membrane box, cushioned by custom high-density molded EVA foam, encased in multi-wall corrugated cartons, and shipped in reinforced export wooden cases for volume shipments. We maintain a < 0.1% transit damage rate and guarantee immediate free replacement in the rare event of shipment damage.

Because the optical polish of zero-background plates is vital for low-angle diffraction accuracy, avoid abrasive mechanical scrubbing. Recommended cleaning protocol: Immerse the holder in high-purity ethanol, acetone, or isopropanol in an ultrasonic bath for 3–5 minutes. For persistent inorganic residues, a mild nitric acid ($10\%\text{ HNO}_3$) or hydrochloric acid bath may be used (quartz is totally impervious to all acids except hydrofluoric and hot phosphoric acid). Rinse thoroughly with $18.2\text{ M}\Omega\cdot\text{cm}$ deionized water and blow dry with filtered nitrogen gas.