ZHQH Customized Quartz Glass Degistion Tube for Lab Glassware COD Digestion Device clear Quartz Glass Tube QGW-07
Category
Keyword
111
Brand:
ZHQH
Material：
99.99% pure quartz
Number：
QGW
Model：
QGW-07
Authentication：
RoHS
Color：
Specifications：
Customized
Origin：
China
- Product Description
-
Product Name
ZHQH Customized Quartz Glass Degistion Tube
Product Overview
A Quartz Glass Digestion Tube is a high-purity fused silica vessel specifically designed for high-temperature sample digestion, acid decomposition, and chemical processing in analytical laboratories. Its exceptional thermal and chemical resistance makes it ideal for harsh digestion protocols.
Key Features
Material Properties
Ultra-High Purity Quartz (SiO₂ ≥99.99%) – Minimizes contamination for trace-element analysis.
Thermal Shock Resistance – Withstands rapid temperature changes (e.g., room temperature to 1200°C).
Chemical Inertness – Resists strong acids (HNO₃, HCl, H₂SO₄) and organic solvents (except HF and hot H₃PO₄).
Design Specifications
Capacity: Commonly 10–50 mL (custom sizes available).
Sealing Options: Open-top, PTFE caps, or ground-glass joints (e.g., 24/29).
Wall Thickness: 1.0–2.5 mm (optimized for durability and heat transfer).
Optical Clarity – Transparent from 170 nm to 2.5 μm, enabling visual reaction monitoring.
Primary Applications
Environmental Analysis: Acid digestion of soils/wastewater (EPA 3050B, 3052).
Food Safety: Sample prep for heavy metal testing (Pb, Cd, As).
Pharmaceuticals: Kjeldahl nitrogen determination.
Geology: Fusion of mineral samples (LiBO₂ flux).
Technical Specifications
Parameter Value Max Temperature 1200°C (short-term), 1000°C (continuous) Pressure Resistance Up to 3 atm (sealed systems) Surface Finish Smooth interior to prevent residue buildup Standards Compliance ASTM E1154, ISO 9001 Advantages Over Competing Materials
✔ VS Borosilicate Glass: Higher temperature limit (1200°C vs. 500°C) and lower trace-metal leaching.
✔ VS PTFE: Suitable for open-vessel digestions with aggressive acids.
✔ VS Ceramics: Transparency allows real-time observation.Usage Guidelines
Pre-Cleaning: Soak in 10% HNO₃ for 12 hours to remove impurities.
Heating: Use with sand baths or graphite blocks to prevent thermal stress.
Lifespan: Discard if clouding, etching, or cracks develop.
Custom Options:
Graduated markings (mL scale).
Frosted labeling surfaces.
Threaded necks for automated systems.
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