Transparent Quartz Tubing Manufacturer & Supplier serving Salzburg

We employ a battle-tested export packaging protocol designed specifically for high-aspect-ratio glass products. Every quartz tube is acid-cleaned, DI-water rinsed, sealed in protective PE film, and encased in high-density polyethylene foam sleeves. Tubes are then nestled into individual cellular corrugated dividers and placed inside multi-wall heavy cartons or ISPM-15 compliant heat-treated wooden crates. Consignments bound for Salzburg, Linz, or Graz travel via priority air freight (DHL Express, FedEx, or air cargo via Munich or Vienna airport hubs) with full insurance and tracking, maintaining a transit breakage rate below 0.1%.

Standard drawing tolerances follow DIN ISO 2768 (medium to fine grades). For precision tubes, outer diameter (OD) and inner diameter (ID) tolerances are held within $\pm 0.1 \text{ mm}$ for diameters up to $50 \text{ mm}$, and $\pm 0.5\%$ of OD for oversized tubes up to $800 \text{ mm}$. Siding wall uniformity (eccentricity) is controlled under $8\%$. End cuts can be diamond-blade sliced ($\pm 0.5 \text{ mm}$ length tolerance), ground parallel, or flame-polished with smooth rounding for O-ring and vacuum flange compression fittings.

Yes. Our engineering team reviews technical drawings in DXF, DWG, STEP, IGES, or PDF formats. We assess thermal-stress zones, wall thickness ratios, joint welding feasibility, and provide immediate design-for-manufacturing (DFM) feedback. Prototypes for university laboratories (e.g., Paris Lodron University of Salzburg) and start-up pilot lines can be produced starting from just 1 piece without retooling surcharges.

Standard transparent fused quartz transmits deep ultraviolet light down to approximately 180 nm, meaning the 184.9 nm spectral emission line of mercury passes through and ionizes oxygen ($O_2$), generating ozone ($O_3$). Ozone-free quartz tubing is doped with trace rare-earth elements (such as titanium) during fusion. This doping introduces a steep optical cut-off band absorbing wavelengths below 220 nm while maintaining maximum transmittance at 253.7 nm for UV disinfection and curing lamps. This prevents toxic ozone accumulation in unventilated laboratory or production spaces.

We accommodate standard Incoterms including EXW, FOB, CIF, DAP, and DDP (Delivered Duty Paid). For DDP shipments to corporate or institutional buyers in Salzburg, all customs clearance procedures, Austrian import sales tax (EUST), and customs tariffs (under HS Code 7002.31 for fused quartz tubes) are handled seamlessly by our international carrier network, delivering right to your facility’s goods-receiving bay with complete commercial documentation and Certificates of Analysis (COA).

Prior to high-temperature or ultra-high vacuum (UHV) service, quartz tubes should be wiped with electronic-grade isopropyl alcohol or ethanol to remove skin oils and dust. For thorough chemical de-greasing, immersion in a 5% to 10% hydrofluoric (HF) acid bath for 2–3 minutes followed by immediate rinsing in deionized water ($18.2 \text{ M}\Omega\cdot\text{cm}$) removes surface contaminants. Once dried, components should be handled exclusively with lint-free lint gloves. Avoid contact with bare hands, as sodium ions from perspiration cause localized surface devitrification (cristobalite crystal growth) at temperatures above 1000°C.