This is a very specific laboratory tool: a Hamilton 75N 5ul SYR (26s/2/3) syringe. It's designed for precise, micro-volume liquid handling in lab settings – we're talking 5 microliters. It's part of Hamilton's professional range, known for accuracy and reliability in applications like chromatography, sample injection, or any procedure needing exact, small-volume measurements. Important note: This is for laboratory use only. Hamilton explicitly states their products are not suitable for medical or clinical use on humans or animals. If you're running a lab and need a replacement or a spare for your Hamilton system, this is the exact part. Ensure your instrument model requires this specific 75N 5ul SYR (26s/2/3) designation before ordering. A crucial component for maintaining the precision of your analytical equipment.