7000 Series

Hamilton 7000 Series Syringes

Zero-dead-volume microliter syringes for ultra-low liquid volumes, maximum sample utilization, and precise analytical dispensing.

Hamilton 7000 Series Syringes

Hamilton 7000 Series Microliter Syringes are designed for highly precise dispensing of ultra-low liquid volumes where minimizing sample loss is critical. Chrom Tech supplies Hamilton 7000 Series syringes for analytical workflows that require exceptional low-volume accuracy, repeatable delivery, and a syringe design optimized for minute sample handling.

The Hamilton 7000 Series is a zero dead volume syringe family intended for dispensing volumes below 5 µL. These syringes use a very fine tungsten plunger wire that travels through the full length of the needle, eliminating the standard dead volume normally present in the needle path and helping maximize sample delivery in sensitive applications.

Zero Dead Volume Design

The defining feature of the 7000 Series is its zero dead volume construction. Because the plunger extends through the needle itself, little to no sample is left behind in the flow path after dispensing. This makes the series especially useful when every nanoliter matters and when sample conservation is important for analytical accuracy.

Engineered for Volumes Below 5 µL

The 7000 Series is specifically designed for applications involving sub-5 µL dispensing. The extremely fine plunger-and-needle design allows laboratories to handle very small liquid volumes with a level of control that standard Microliter syringe constructions may not provide as effectively.

Tungsten Plunger Wire for Ultra-Low Volume Control

To support these minute dispensing volumes, the 7000 Series uses a tungsten plunger wire rather than a conventional larger plunger. Precision needle tolerances are matched to this wire so the syringe can deliver very small liquid volumes accurately and consistently in demanding analytical workflows.

Designed for Sensitive Analytical Applications

The 7000 Series is well suited for sensitive applications where low sample volume, accurate delivery, and minimal residual hold-up are all important. This makes the series a strong choice for laboratories performing microinjection, trace-level dispensing, and other workflows where standard dead volume could negatively affect recovery or reproducibility.

Modified Microliter Syringe Construction

The 7000 Series uses a modified Microliter syringe design. Unlike more conventional fitted barrel-and-plunger configurations, the plunger-in-needle construction changes how the sample is displaced, allowing the syringe to support extremely low-volume dispensing while maintaining tight dimensional control through the needle bore.

Built for Maximum Sample Utilization

In ultra-low-volume analytical work, even small residual losses can affect results. By eliminating standard needle dead volume, the 7000 Series helps laboratories improve sample utilization, reduce leftover volume in the syringe path, and support more consistent low-volume performance from injection to injection.

As an authorized distributor, Chrom Tech helps laboratories select the right Hamilton 7000 Series syringe configuration based on volume requirement, application sensitivity, and low-dead-volume performance needs. For workflows involving minute liquid volumes and demanding analytical precision, Chrom Tech can help match the right 7000 Series syringe to your method.

Key Definitions ▸
Zero Dead Volume Syringe
A syringe design that minimizes or eliminates residual sample left in the needle path after dispensing.
Plunger-in-Needle Design
A syringe construction in which the plunger wire extends through the full needle length to drive sample directly through the needle.
Tungsten Plunger Wire
A very fine, rigid plunger material used in ultra-low-volume syringes to support accurate displacement of minute liquid volumes.
Ultra-Low Volume Dispensing
Manual or controlled syringe delivery of very small liquid volumes, typically in the low microliter or nanoliter range.
Needle Dead Volume
The small amount of sample that can remain inside a syringe needle after dispensing when the plunger does not extend through the full needle path.
Modified Microliter Design
A specialized Microliter syringe construction adapted for extremely small liquid volumes and enhanced sample delivery efficiency.
Minute Liquid Volumes
Very small sample quantities that require precise handling, often below standard low-volume manual injection ranges.
Needle Bore Tolerance
The precision of the internal needle diameter, which is critical when matching a fine plunger wire to the needle for accurate sample displacement.
Sub-5 µL Syringe Application
An analytical use case that requires accurate dispensing of liquid volumes below 5 microliters.
Frequently Asked Questions ▸
What is the Hamilton 7000 Series used for?
The Hamilton 7000 Series is used for dispensing minute liquid volumes in highly sensitive analytical workflows where very low residual sample volume is important.
What makes the 7000 Series different from standard Microliter syringes?
Hamilton describes the 7000 Series as a zero-dead-volume syringe that uses a tungsten plunger wire running through the needle, unlike more conventional Microliter syringe designs that leave standard dead volume in the needle path.
Why is zero dead volume important?
Zero dead volume helps maximize sample utilization by reducing or eliminating liquid left behind in the needle after dispensing. This is especially important in ultra-low-volume applications.
What volume range is the 7000 Series designed for?
Hamilton positions the 7000 Series for volumes below 5 µL, making it suitable for very small liquid dispensing and trace-level workflows.
Why does the 7000 Series use a tungsten plunger wire?
The 7000 Series uses a very fine tungsten plunger wire because this design supports accurate movement through the needle bore and precise displacement of minute sample volumes.
What types of applications benefit most from the 7000 Series?
Applications involving microinjection, trace-level analysis, ultra-low-volume sample delivery, and workflows where sample conservation is critical can benefit from the 7000 Series design.
Does the plunger inside the needle improve sample delivery?
Yes. Because the plunger extends through the needle, the 7000 Series can push sample directly through the full needle path, helping reduce residual hold-up and improve low-volume delivery efficiency.
Does Chrom Tech help with 7000 Series syringe selection?
Yes. Chrom Tech can help identify the right 7000 Series syringe configuration based on required dispensing volume, application sensitivity, and the need for zero-dead-volume performance.