Custom Precision Micro Quartz Capillary Tube-sara

Client Pain Points Before Cooperation

1. Ordinary capillary tubes had poor concentricity, uneven wall thickness, resulting in unstable microfluid pressure and poor repeatability of experimental data.
2. Rough inner tube wall with tiny pits, easy to adsorb samples and residual chemicals, causing pipeline blockage and test deviation.
3. Unannealed capillary contained internal stress, easy to crack under rapid temperature rise and fall, high replacement cost and frequent equipment downtime.
4. Low-purity quartz raw material precipitated impurities under high temperature, polluting test samples and affecting detection accuracy.
5. Uncontrolled dimensional tolerance of inner diameter, unable to match the customer’s precision injection and separation modules.

Our Customized Quartz Capillary Tube Solution

1. High-Purity JGS1 Fused Silica Material
    
   Adopt low-hydroxyl synthetic quartz without bubbles, impurities and metal ions, excellent UV to infrared light transmittance, completely avoid sample contamination in precision analysis.
2. High-Precision Constant-Diameter Drawing Process
    
   Professional micro-drawing technology, inner diameter tolerance controlled within ±1μm, excellent concentricity, uniform tube wall thickness, ensuring stable and consistent microfluid flow rate.
3. Mirror Polished Inner & Outer Surface
    
   Special internal flame polishing treatment, ultra-smooth inner wall, greatly reduce sample adsorption, no residue after cleaning, improve detection accuracy.
4. Full High-Temperature Stress Relief Annealing
    
   All finished capillaries go through slow annealing to eliminate internal stress, strong thermal shock resistance, adapt to rapid temperature cycling of chromatographic equipment.
5. Full-Size Customization Support
    
   Customizable inner diameter (5μm~500μm), outer diameter, wall thickness, length, flat cut end, tapered tip, square capillary, coated protection layer as per customer technical drawings.

Delivery & Actual Operation Effect

1. Zero tube cracking after hundreds of cold & hot cycle tests, service life increased by over 3 times;
2. Smooth inner wall without sample adsorption, test data repeatability improved by 18%;
3. Consistent dimensional batch stability, perfectly matched original instrument modules, greatly reducing assembly debugging time;
4. Ultra-high material purity, no impurity precipitation, stable and reliable long-term detection data.

Core Advantages of Our Quartz Capillary Tube

1. Ultra-high purity fused silica raw material, inert chemical property, resistant to acid, alkali and all organic solvents.
2. Micron-level precise size control, outstanding concentricity, stable microfluid transmission for precision analysis.
3. Mirror polished inner wall, low sample adsorption, easy cleaning, effectively reduce test error.
4. Excellent thermal stability, continuous working temperature up to 1100℃, withstand rapid heating and cooling.
5. Multiple specifications & shapes customizable: round/square capillary, flat end/tapered tip, protective coating optional.
6. Strict multi-process quality inspection, small trial order & bulk mass production acceptable, fast delivery cycle.

Main Application Scenarios of This Case Product