TAOMSUN compatible sampling needle for Mindray 5380 / BS300 series biochemistry analyzers (145L hardened), made of high-quality stainless steel with CNC precision machining, dimensional accuracy within ±0.01 mm, high fit accuracy, no extra adjustment needed, ready to use. Mirror-polished and hardened surface with smooth inner wall, no burrs, no clogging, no liquid retention, minimal reagent residue, effectively reducing cross-contamination risk. Excellent wear resistance, service life over 30% longer than ordinary sampling needles. Resistant to acid and alkali corrosion, suitable for sampling strong acids, strong alkalis and viscous samples in chemical and research laboratories. Independent shockproof packaging, SF Express delivery by default, made in Suzhou, Jiangsu, China. This product is a compatible replacement part for Mindray equipment, not manufactured by the original manufacturer, intended for laboratory equipment replacement only. Overseas sales / technical support provided by METICULAB (Korea).