Laboratory syringes: for which sampling, dosing and transfer applications are they used?

Everyday essentials, laboratory syringes enable precise-volume sampling, dispensing and transfer of samples. From sterile single-use polypropylene models to reusable borosilicate glass versions with PTFE plungers (gas-tight types), they cover sample preparation, filtration with syringe filters, injections in chromatography and the feeding of syringe pumps. Options for Luer Lock or Luer Slip fittings, clear graduations, low dead volume and broad chemical compatibility support a safe, durable choice.

What are the different types of laboratory syringes?

Two main families structure the range: single-use syringes and reusable syringes.

• Single-use models (2- or 3-piece) in polypropylene meet sterility and aseptic handling needs. Available from microlitre to several tens of mL, with Luer Lock tips (secure under pressure, ideal with syringe filters) or Luer Slip (quick connection). Latex-free, silicone-free and low dead volume options to minimise loss of samples or costly antibodies.

• Reusable glass/PTFE models (gas-tight) for organic solvents and syringe pumps. For dosing in µL or nL, favour microlitre syringes (flush metal plunger) or “neuro” micro-injection (integrated fixed needle, near-zero dead volume): very precise but sensitive to particles/viscosity and not well-suited to pumps. Low dead volume options exist only on dedicated references. For the fitting, Luer Lock is recommended under pressure (filters/pumps), Luer Slip for quick connections, respecting pressure limits. Glass/PTFE syringes are autoclavable under defined conditions (e.g. 121 °C, limited cycles) with seal kits.

Key selection criteria:
• Volume and readout resolution (high-contrast graduations, small volumes for analytical work).
• Connection (Luer Lock vs Luer Slip or specific fitting), concentric/off-centre tip depending on handling and pressure.
• Chemical compatibility (PP vs glass/PTFE, LC/MS requirements and biocompatibility).
• Sterility, ethylene oxide (EtO)/gamma irradiation, unit or bulk packaging, pyrogen-free options.
• Ergonomics (finger flanges, plunger stop), dead volume, use with needles or dedicated tips.

Type	Principle	Applications
Single-use PP (2/3-piece)	PP barrel, plunger with/without gasket; sterile	Cell culture, sampling, filtration, quick dispensing
Reusable glass gas-tight	Glass barrel, leak-tight PTFE plunger	HPLC/GC, aggressive solvents, syringe pumps
Microlitre analytical	Very low volume, high precision	Microinjection, standards, trace analysis

For a lower footprint, prefer right-sized volumes, low dead volume options, optimised packaging and reusable models where the method and traceability allow.

In which fields and applications are laboratory syringes used?

• Life sciences: sterile transfers, media preparation, additive addition, filtration using syringe filters in cell culture.
• Analytical (HPLC/GC): manual injections, standards, solvent handling; gas-tight and microlitre models recommended.
• Pharmaceuticals & cosmetics: precise dosing of excipients, batch sampling, viscosity testing with suitable tips.
• Food & beverage: in-line sampling, rapid extraction and filtration of samples.
• Environmental: field kits, water/eluate sampling, reagent inoculation/spiking.
• Chemistry/R&D: reactor feed, syringe pumps for constant flow, low-pressure transfers with Luer Lock connection.
• Quality control: reproducible aliquoting, reduced losses thanks to low dead volume.

Available laboratory syringe types

Frequently asked questions about laboratory syringes

Luer Lock or Luer Slip: which should you choose?
The Luer Lock secures the connection under pressure (syringe filters, pumps). The Slip suits rapid connections where a push-fit is sufficient.

Can a single-use syringe be reused?
Not recommended: risk of contamination, plunger seal wear and volume drift. Prefer a reusable designed for that purpose.

Are glass/PTFE syringes resistant to solvents?
Yes, they offer broad chemical compatibility. Check specific solvents with the manufacturer.

Is autoclaving possible?
The autoclavable glass models allow it. Sterile single-use PP syringes must not be re-sterilised.

How do you minimise bubbles during injection?
Purge slowly, keep the tip pointing up, tap to degas, and use tips matched to the target volume.

Which syringes for syringe pumps?
Choose a barrel with compatible dimensions, sufficient rigidity and good sealing (often glass/PTFE for stable flow rates).

How to manage dead volume?
Select low dead volume models, short connectors, and adjust the rinse volume to preserve your analytes.