Overview
The vaccine syringe is a three-piece medical device, available with or without a hypodermic needle. Manufactured from medical-grade raw materials, the syringe undergoes EO (ethylene oxide) sterilization to ensure maximum sterility. Each unit is packaged in a blister pack composed of medical-grade paper and transparent film. All vaccine syringes are 100% leak-proof, and all needle tips are laser-cut from stainless steel.
What is a Vaccine Syringe?
A vaccine syringe is a medical tool used to inject or withdraw fluids. It consists of a movable plunger within a cylindrical tube and a narrow tip through which fluids are dispensed. In common usage, it is often referred to as a needle. While originally developed for medical purposes, syringes are now occasionally used in gardening or cooking as well.
In medicine, vaccine syringes are used to:
Clean wounds and cavities
Inject fluids (e.g., vaccines, medication)
Draw bodily fluids such as blood
Historically, syringes were made from glass, later followed by metal variants. Today, plastic syringes dominate due to their disposability and ease of sterilization.
Types of Syringes in Medicine
There are three primary syringe materials used in medicine:
Glass Syringes: Chemically inert but less commonly used today
Metal Syringes: Durable, reusable, but susceptible to chemical interaction
Plastic Syringes: Lightweight, disposable, and the most commonly used today
Each syringe material interacts differently with various medications. Therefore, doctors determine the appropriate syringe type based on potential chemical reactions. Syringes also vary by volume, typically available in 2 mL, 4 mL, 5 mL, 10 mL, 20 mL, 50 mL, etc.
Syringe vs. Injector
Though often used interchangeably, there is a subtle difference:
A syringe can both inject and draw fluids (e.g., vaccines or blood samples)
An injector is typically designed only to deliver substances (e.g., insulin or allergy medications)
Needle Color Codes by Gauge
Needle gauge refers to the diameter of the needle, while length is measured in millimeters (mm). Each gauge corresponds to a specific color:
18G – Pink
20G – Yellow
21G – Green
22G – Black
23G – Blue
24G – Purple
25G – Orange
26G – Brown
27G – Grey
Note: All needles of the same gauge have the same thickness, regardless of their length.
Features of Vaccine Syringes
3-piece construction
Available with or without needle
Hypodermic needle compatible
Made from medical-grade materials
Polypropylene barrel
Polyethylene plunger
Latex-free gasket
Packaged in blister packs
EO sterilized
TTT World continues to lead in the production of safe, reliable, and certified vaccine syringes that meet global healthcare standards.








