Lab Needles
Syringe Needles
Check out Hamilton's Web-Based Needle Builder
If you are looking where to buy syringe needles, Hamilton Company offers the widest variety of standard syringe needles and custom lab needles in the industry. Manufactured from 304 stainless steel and with needle gauges from 10 to 34, and lengths from 0.375 to 12 inches, almost any syringe needle is possible. Multiple hub styles available including luer lock, small/large hub removable needle hubs, hat hub, and hub-less. Hamilton Company needles, as well as other laboratory products, are available for purchase directly from our website.
Try the Visual Needle Builder
Take the hassle out of syringe needle selection with Hamilton's visual tool to guide you through the selection process.
Lab Needle Terminology
Hamilton Grants
Hamilton Company has always been a proud supporter of higher education and learning. We currently offer two designated grant programs available to teaching and research facilities to help with research and discovery. Each month, multiple winners are selected and announced on our social media feed.
University Discount Program
Hamilton is committed to higher education and believes in the importance of developing the next generation of scientists. Learn how you can save 25% on all syringes, needles, and HPLC columns purchased throughout the year.
Needle Point Style Guide
Hamilton offers a variety of different needle point designs. Needle termination selection is very important to the proper function an application. Lab needles need to perform in many different environments and terminations are available in non-coring, beveled, drilled side port and more. Click to see which version is best for your application.
Needle Gauge Chart
In addition to being inert stainless steel, lab needles require proper sizing in order to function properly. The diameter of a needle is defined by its gauge. In addition to being inert stainless steel, lab needles require proper sizing in order to function properly. Hamilton company offers a wide spectrum of gauges. This index displays the internal and outer dimensions as well as the dead volume.
Needle Length Guide
Needle length is a critical consideration for every application. Each needle hub design requires a slightly different length definition. It doesn't matter if the application is utilizing lab needles for life science injection or environmental analysis of ground water, the injection needs to hit the right target. This guide illustrates how to make the different measurements.
Resources
Hamilton's knowledge base provides a range of explanatory articles, frequently asked questions, and document downloads.
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Instructions - Needle Cleaning Kit
Hamilton Company’s Needle Cleaning Kit contains a 70 mL bottle of Cleaning Solution Concentrate and tungsten cleaning wires in five sizes. Refer to the table below to determine the optimum size and part number of cleaning wires for your needles. -
SDS - Needle Cleaning Solution
Safety data sheets (SDS) are documents that allow for the documentation and logging of the potential risks and hazards associated with a product or substance. Hamilton Company provides SDS sheets for many of it's syringe and needle parts and accessories. Download the safety data sheet for Hamilton's needle cleaning solution. -
Guide - Syringe and Needle Assembly
Take a look at our useful syringe and needle assembly guide. See how to easily assemble and disassemble or lab syringes. We combine the highest quality materials with skilled craftsmanship, ensuring the highest possible performance of every precision fluid device we manufacture. With proper care and handling, the Hamilton needles will provide years of use.
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What does the s mean in a 22s or 26s gauge needle?
The "s" represents a smaller inner diameter for the needle and a thicker needle wall for better durability. For example, a 26 gauge needle has an outer diameter of 0.46 mm and an inner diameter of 0.26 mm while the 26s gauge needle has an outer diameter of 0.47 mm and an inner diameter of 0.13 mm. The 26s has half the inner diameter of the 26 gauge needle. The difference in the wall thickness also nearly doubled with 26s gauge having a thickness of 0.18 mm while the 26 gauge is only 0.10 mm. -
I have a syringe, which needle do I need?
If you already have a syringe and need a Hamilton needle, you can determine the appropriate needle if you know one of the following: 1) the glass syringe termination; 2) the glass syringe part number; or whether you are dealing with a common plastic syringe. Click the heading to learn more. -
What is Dead Volume?
Dead volume is defined as the volume of solution that remains in the needle after an injection. Many methods require or would benefit from a fluid path with as little dead volume as possible. This is because the fluid being transferred is of high value and it would be desirable to limit any loss.
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Needle Point Style Guide
Hamilton offers a variety of different needle point designs. Needle termination selection is very important to the proper function an application. Lab needles need to perform in many different environments and terminations are available in non-coring, beveled, drilled side port and more. Click to see which version is best for your application. -
Needle Length Guide
Needle length is a critical consideration for every application. Each needle hub design requires a slightly different length definition. It doesn't matter if the application is utilizing lab needles for life science injection or environmental analysis of ground water, the injection needs to hit the right target. This guide illustrates how to make the different measurements. -
Needle Gauge Chart
In addition to being inert stainless steel, lab needles require proper sizing in order to function properly. The diameter of a needle is defined by its gauge. In addition to being inert stainless steel, lab needles require proper sizing in order to function properly. Hamilton company offers a wide spectrum of gauges. This index displays the internal and outer dimensions as well as the dead volume.
Work with R&D engineers to customize Hamilton parts
Hamilton's "Custom Built" program puts you directly in contact with a Hamilton R&D Engineer to discuss your application and product needs. The engineer will point you to a standard solution or propose a customized solution to meet your needs.
Talk to an engineer