Medical-Grade 316L with a Surface-Hardened Tip Machined from medical-grade 316L stainless steel, then precision-ground and surface-hardened — the tip stays sharp and wear-resistant through high-frequency cap piercing, with no rolling over and no deformation.
Mirror-Polished Bore, Low Carryover A mirror-polished internal bore keeps flow unobstructed and residue-free, suppressing wall adhesion and carryover alongside the analyzer’s automatic external probe wash.
Closed-Tube Only — Not the Open-Vial Probe On the HmX AL, closed-vial piercing and open-vial aspiration are two separate probe assemblies. This is the closed-tube piercing needle, and it is not interchangeable with the open-vial aspirator probe.




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