Leap Pal Parts Chromatography Syringe Plunger 100 ul PTFE Seal

LEAP PAL Parts Syringe Replacement Plunger Assembly – 100 µm Volume, Precision-Fit PTFE Tip Seal, Gas-Tight Optimization (MPN: 2620719)

The LEAP PAL Parts 2620719 (commonly integrated within CTC PAL, Agilent, and Gerstel autosampler ecosystems) is an instrument-grade replacement plunger assembly precision-engineered for 100 microliter (µL) gas-tight chromatography syringes. This high-performance hardware assembly features a robust stainless steel plunger shaft terminated with a specialized, self-lubricating Polytetrafluoroethylene (PTFE) tip seal. Designed to restore factory-spec volumetric accuracy to worn analytical syringes, the press-fit PTFE seal conforms tightly to the inner glass barrel chamber. This tight mechanical contact creates a leak-free, gas-tight barrier that prevents sample blow-by, cross-port pressure drops, and localized fluid vaporization during rapid high-velocity automated injections.

Technical Performance and Design

• Gas-Tight PTFE Tip Sealing: Outfitted with a premium, chemically inert PTFE tip matrix. The polymer seal maintains continuous, uniform mechanical pressure against the interior glass syringe barrel wall, establishing an absolute seal capable of handling both liquid sample draws and volatile headspace gas extractions.

• Zero Sample Blow-By Defense: The precise dimensional tolerancing of the plunger tip eliminates fluid bypassing (blow-by) during high-pressure autosampler injection strokes. This design safeguards volumetric carryover metrics and ensures highly reproducible retention times.

• Polished Stainless Steel Core Shaft: The main plunger rod is machined from high-purity, structural stainless steel alloy. This rigid backing prevents bending, flexing, or axial misalignment when driven by high-torque robotic autosampler stepper motors.

• Universal PAL Autosampler Fitment: Specifically calibrated to slide seamlessly into standard 100 µL syringe bodies utilized across CTC PAL, PAL3, Gerstel MPS, and matching automated liquid handling platforms without requiring manual calibration overrides.

Product Specifications

• Catalog Number / MPN: 2620719

• Manufacturer / Brand: LEAP PAL Parts / Analytics Parts Lines

• Component Type: Replacement Syringe Plunger Assembly with Active Polymer Tip Seal

• Syringe Capacity Match: Optimized for 100 µL (100 microliter) Gas-Tight Syringe Series

• Tip Seal Material Composition: High-Purity Virgin Polytetrafluoroethylene (PTFE)

• Shaft Material Matrix: Corrosion-Resistant Premium Stainless Steel

• Analytical Domain Alignment: Gas Chromatography (GC), High-Performance Liquid Chromatography (HPLC), and Automated Sample Prep Modules

Key Benefits and Applications

• Autosampler Syringe Rebuilding: The standard cost-saving maintenance component used to restore baseline performance to a 100 µL syringe when the original plunger tip becomes worn, scratched, or fails to hold a vacuum.

• Volumetric Precision Security: Eradicates microfluidic dosing fluctuations, helping analytical testing facilities maintain low relative standard deviation (RSD) percentages across long multi-sample screening sequences.

• Excellent Chemical Solvent Inertness: The exposed PTFE tip resists chemical attack from aggressive organic solvents, strong acids, bases, and mass spectrometry-grade extraction buffers without leaching plasticizers.

• Smooth Friction-Free Travel: The self-lubricating characteristics of the polymer tip dramatically lower structural friction against glass barrels, extending the operational lifespan of the syringe assembly and reducing physical wear on autosampler drive gears.

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