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Precision Puncture Needle

Medical Machining Parts
January 24, 2026
Category Connection: Medical Machining Parts
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Tags:
#Medical Needle #CNC Milling Parts #Cnc Medical Parts
Brief: Curious about how this performs in practice? Join us for a hands-on look at the 304 Stainless Steel Capillary Sandblasting Marking Puncture Needle. This video demonstrates the precision manufacturing process, from sandblasting to laser etching, and showcases its dual-function capability for accurate volumetric measurement and clean penetration in laboratory and industrial applications.
Related Product Features:
  • Made from 304 stainless steel capillary tubing for inherent strength and corrosion resistance.
  • Features a uniform matte surface finish created through controlled sandblasting for enhanced durability.
  • Includes permanent laser-etched volume graduations for precise micro-volume fluid measurement.
  • Precision-ground sharp tip ensures reliable puncture of septa or membranes.
  • Designed for applications in gas chromatography, liquid chromatography, and micro-syringe use.
  • Available in various outer diameters, inner diameters, and total lengths to suit different needs.
  • Undergoes chemical passivation treatment to restore and enhance corrosion resistance.
  • Packaged in protective racks or sleeves to prevent damage during transport and storage.
FAQs:
  • What are the primary applications for this puncture needle?
    This needle is designed for precision fluid handling in laboratory and industrial settings, including gas chromatography (GC) and liquid chromatography (LC) for sample injection, micro-syringe applications, precision fluid dispensing of adhesives or reagents, laboratory sample preparation, and educational demonstrations.
  • How is the scale on the needle created and how accurate is it?
    The scale is created using high-precision laser etching directly onto the sandblasted surface, providing permanent, high-contrast graduation marks in units like µL or mm. The scale accuracy is approximately ±2-5% of the indicated volume, though for critical applications, calibration against delivered volume is recommended.
  • What materials and treatments ensure the needle's durability and compatibility?
    The needle is made from 304 stainless steel, offering good chemical resistance and mechanical strength. It undergoes a sandblasting process for a uniform matte finish and a chemical passivation treatment per ASTM A967 to enhance corrosion resistance. It is compatible with a wide range of aqueous solutions, solvents, oils, and mild chemicals.
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