Product Description

The 316L Stainless Steel Laboratory Spray/Liquid Jet Needle with CNC Milled Luer Connector is a precision-engineered, all-metal fluidic component designed for demanding experimental and analytical applications. This unit integrates a needle body optimized for liquid spraying or precise jetting with a robust, leak-proof Luer connector, all machined from a single piece of medical-grade 316L stainless steel via精密CNC milling. The monolithic construction eliminates potential weak points from assembly, while the 316L material provides superior chemical resistance and corrosion stability. The CNC-milled Luer threads (typically Luer lock) ensure a perfect, secure fit with standard laboratory syringes or tubing, making it an ideal, durable tool for controlled fluid delivery in research, chromatography, and micro-dispensing.

Product Processing

1. Material Preparation: A solid rod of certified 316L stainless steel is selected and cut to a suitable blank length.

2. CNC Swiss Machining / Multi-Axis Milling: The blank is loaded into a精密CNC Swiss-type lathe or a multi-axis milling center. The machining process in a single setup includes:

   • Turning: Creating the primary outer diameters and tapers of the needle body and connector base.

   • Milling the Luer Threads: Using live tooling, the precise, standardized Luer lock threads (e.g., per ISO 80369-7) are cut onto the connector section. This is a critical step for fit and seal integrity.

   • Drilling the Internal Lumen: A deep, straight hole is drilled or gun-drilled through the entire length to form the fluid channel.

   • Forming the Tip/Orifice: The distal end is machined to form the specific spray/jet geometry. This could be a simple bevel, a tapered cone, or a more complex shaped orifice using micro-milling.

3. Deburring & Internal Polishing: All machined edges, especially at the internal lumen entrance and the spray orifice, are meticulously deburred. The internal bore is then honed and/or electrophished to achieve a smooth, contaminant-free surface for consistent fluid flow.

4. Surface Passivation: The entire component undergoes chemical passivation per ASTM A967 (Method for 316L) to maximize its corrosion resistance by enhancing the protective chromium oxide layer.

5. Cleaning, Inspection & Marking: Final ultrasonic cleaning removes all residues. 100% inspection verifies critical dimensions (Luer thread fit via gauge, orifice size, concentricity). Laser marking is often applied for identification (e.g., part number, orifice size).

6. Packaging: Packaged clean and dry, suitable for laboratory use. Can be supplied non-sterile or sterilized (autoclave, ETO, Gamma).

Product Applications

• Analytical Chemistry: Sample introduction needles for GC/MS, HPLC, or ICP-MS requiring a secure, metal-to-metal connection and a precise spray tip for nebulization.

• Microfluidic Research: As a robust interface to connect syringes or pumps to microfluidic chips or lab-built apparatus.

• Precision Dispensing: For laboratory-scale dispensing of reagents, solvents, or standards where a secure Luer connection and a specific jet profile are needed.

• Spray Characterization Studies: As a standardized, durable nozzle for studying droplet size, spray patterns, or jet breakup in fluid dynamics research.

• Chemical Synthesis: For the controlled addition of reactants in small-scale or automated synthesis setups.

Product Technical Parameters (Detailed Table)