Hamilton 80900 Gastight Syringe 50 ul 1705N Cemented 22 s

Hamilton 80900 Gastight Syringe 1705N – 50 µL, Cemented Needle (22s)

The Hamilton 80900 (Model 1705N) is a premium 50 µL Gastight syringe engineered for ultra-precise liquid and gas dispensing. The 1700 series is distinguished by its precision-machined PTFE plunger tip, which provides a tight, frictionless seal that prevents blow-by and sample loss, even when handling pressurized gases or volatile organic solvents. This syringe is equipped with a Cemented (N) needle termination, permanently fixing the needle flush with the zero mark of the glass barrel to virtually eliminate dead volume and sample carryover. The 22s gauge needle is specially drawn with a thicker wall and narrower internal diameter ("s" designation) to provide exceptional mechanical durability during repeated septum piercing. Calibrated to rigorous tolerances, the 80900 provides exceptional accuracy for manual GC/HPLC injection, analytical standard preparation, and precise mid-range micro-volume pipetting.

Technical Performance and Design

• Gastight PTFE Plunger: The self-lubricating, chemically inert PTFE tip ensures highly reproducible dispensing of both aqueous solutions and aggressive organic solvents without plunger freeze-up or leakage.

• Cemented (N) Termination: The needle is permanently affixed to the glass barrel using a chemical-resistant epoxy, minimizing dead volume and maximizing accuracy for micro-volume analytical workflows.

• 22s Gauge Architecture: The "s" indicates a customized needle with a thicker outer wall. The 22s gauge provides robust mechanical strength to pierce tough septa without bending, while strictly controlling the flow rate of the 50 µL volume.

• Point Style 2 (Beveled): Features a sharp, 22-degree bevel tip specifically optimized for the clean penetration of GC and HPLC injection port septa with minimal coring.

Product Specifications

• Catalog Number: 80900

• Series/Model: 1700 Series / 1705N

• Maximum Volume: 50 µL

• Syringe Type: Gastight (PTFE-tipped plunger)

• Needle Termination: Cemented (N)

• Needle Gauge & Length: 22s, 2 inches (51 mm)

Key Benefits & Applications

• Chromatography Injections: The industry standard for manual GC and HPLC injection, safely handling volatile organics and preventing sample loss during pressurization.

• Inert Fluid Path: The PTFE tip and borosilicate glass construction mean the sample only contacts inert materials before reaching the stainless steel needle, preserving sample integrity.

• Analytical Standard Prep: Provides the extreme accuracy and reproducibility required for creating calibration curves, spiking samples, and serial dilutions.

• Zero Dead Volume Performance: The cemented design ensures that the entire 50 µL sample is dispensed exactly as read on the high-contrast barrel graduations.

All product names, logos, and brands are property of their respective owners.