

ULTRAJECT® U-100 Syringe with 31G Needle – Box of 100
ULTRAJECT® U-100 Syringes are sterile, single-use disposable syringes featuring an integrated ultra-fine 31G needle, designed for precise and controlled subcutaneous administration where this syringe specification is clinically appropriate.
Each syringe incorporates an integrated 31G × 5/16" (8mm) needle, providing practitioners with a compact all-in-one syringe and needle system without the need to attach a separate needle before use.
The syringe features a U-100 graduated barrel, designed for preparations where U-100 calibration is appropriate. The graduated barrel supports accurate visual measurement, while the ultra-fine fixed needle provides controlled administration for appropriately selected subcutaneous procedures.
ULTRAJECT® syringes are supplied sterile and individually packaged for single use, helping support appropriate hygiene and infection-control procedures within professional clinical environments.
Each box contains 100 individually packaged syringes, making ULTRAJECT® U-100 a practical professional consumable for medical clinics, aesthetic practices and other appropriately regulated healthcare environments.
Pack Contents
Each box contains:
• 100 × ULTRAJECT® U-100 Syringes with Needle
• Integrated 31G needle
• Needle length: 5/16" (8mm)
• U-100 graduated syringe barrel
• Individually packaged sterile syringes
• Single-use disposable design
Quantity: 100 syringes per box
Product Specifications
• Brand: ULTRAJECT®
• Product Type: Disposable syringe with fixed needle
• Syringe Calibration: U-100
• Needle Gauge: 31G
• Needle Length: 5/16" / 8mm
• Quantity: 100 per box
• Sterility: Sterile
• Use: Single use only
• Disposable: Yes
• Non-Toxic: Yes
• Pyrogen-Free: Yes
• Intended Route: Subcutaneous administration where clinically appropriate
31G Ultra-Fine Needle
Each ULTRAJECT® U-100 syringe incorporates an ultra-fine 31G fixed needle.
The integrated needle measures:
• 31G
• 5/16"
• 8mm
The combination of a fine 31G gauge and short 8mm needle provides a compact injection system for controlled subcutaneous administration where this specification is clinically appropriate.
The suitability of the needle should always be assessed according to:
• Intended injectable product
• Route of administration
• Required injection depth
• Anatomical area
• Patient anatomy
• Manufacturer instructions
• Relevant professional protocol
The needle specification should never be selected solely on convenience. Practitioners must ensure that both the gauge and length are appropriate for the intended preparation, administration route and individual patient.
U-100 Graduated Syringe
ULTRAJECT® syringes feature a U-100 calibrated barrel.
U-100 calibration is designed for preparations where:
100 units = 1ml
when used with an appropriate U-100 preparation.
It is essential to understand that the markings on a U-100 syringe represent U-100 units and do not provide a universal medication or injectable-product dose.
Practitioners must therefore always:
• Confirm that U-100 calibration is appropriate for the intended preparation
• Confirm the prescribed or required dose
• Calculate the correct administration volume
• Follow the instructions supplied with the product being administered
• Never assume that syringe units correspond directly to milligrams or another dosing measurement
• Follow all applicable professional and manufacturer guidance
A U-100 syringe should only be selected where its calibration is appropriate for the intended application.
Important: U-100 markings must not automatically be interpreted as the dosing units of an unrelated medication or injectable product.
Incorrect interpretation of syringe graduations can result in dosing errors.
Integrated Fixed-Needle Design
The 31G needle is integrated directly into the ULTRAJECT® syringe, creating a convenient single-piece injection system.
This eliminates the need to attach a separate needle before administration.
Potential practical advantages include:
• No separate needle attachment required
• Convenient ready-to-use configuration
• Reduced preparation steps
• Consistent needle specification
• Compact syringe and needle assembly
• Convenient preparation within busy professional environments
• Reduced potential for accidental needle detachment during appropriate use
• Straightforward disposal as a complete unit following administration
Because the needle is permanently integrated into the syringe, the complete device is intended for single use only.
Following administration, the entire syringe and needle assembly should be immediately disposed of in an appropriate approved sharps container.
Precision & Controlled Administration
Accurate measurement and controlled administration are particularly important when working with small injection volumes.
The graduated U-100 barrel allows practitioners to visually measure the required quantity where this calibration is appropriate, while the integrated 31G × 8mm needle supports controlled subcutaneous administration for appropriately selected applications.
Before administration, practitioners should always:
• Confirm the correct injectable product
• Confirm the prescribed or required dose
• Confirm the required administration volume
• Confirm the intended route of administration
• Confirm that U-100 calibration is suitable
• Confirm that the 31G × 8mm needle is appropriate
• Check that the individual sterile packaging is intact
• Check the expiry date where applicable
• Maintain appropriate aseptic technique
• Follow the relevant product and professional guidance
An injectable dose should never be estimated solely from the markings on the syringe without first confirming the correct dose-to-volume relationship for the preparation being administered.
Key Benefits
• Professional disposable syringe with integrated needle
• U-100 calibrated barrel
• Ultra-fine 31G needle
• Short 5/16" (8mm) needle
• Integrated fixed-needle design
• Designed for controlled subcutaneous administration where appropriate
• Clear graduated barrel
• No separate needle attachment required
• Convenient all-in-one design
• Reduced preparation steps
• Sterile presentation
• Non-toxic
• Pyrogen-free
• Disposable
• Single-use design
• Individually packaged
• Convenient professional clinic consumable
• Supplied in a box of 100
• Suitable for appropriately trained professionals where the syringe specification matches the intended procedure
Common Professional Applications
ULTRAJECT® U-100 Syringes are designed for subcutaneous injection procedures where the syringe calibration, needle gauge and needle length are appropriate for the preparation being administered.
They may be used within appropriate professional environments including:
• Medical clinics
• Aesthetic clinics
• Healthcare practices
• Nurse-led clinics
• Other appropriately regulated clinical environments
The syringe should only be selected after confirming compatibility with the intended medication or injectable preparation.
The integrated 31G × 8mm needle must also be appropriate for the required administration route, injection depth, anatomical area and individual patient.
Sterile & Single-Use
Each ULTRAJECT® syringe is supplied as a sterile, disposable medical consumable.
The product is identified as:
• Sterile
• Non-toxic
• Pyrogen-free
• Disposable
Each syringe is intended for:
• One patient
• One procedure
• One administration only
Do not:
• Reuse the syringe
• Reuse the integrated needle
• Attempt to resterilise the device
• Share the device between patients
• Use if the individual sterile packaging has already been opened
• Use if the packaging is damaged or compromised
Following use, immediately dispose of the complete syringe and integrated needle in an appropriate approved sharps container according to applicable clinical-waste procedures.
Storage & Handling
Store ULTRAJECT® U-100 Syringes within their original packaging in an appropriate clean and dry environment.
To help maintain product sterility and integrity:
• Keep within the original packaging until required
• Protect from excessive heat
• Protect from moisture
• Keep away from direct sunlight
• Maintain the integrity of the sterile packaging
• Inspect the individual packaging before use
• Check the product expiry date where applicable
• Do not use damaged syringes
• Do not use if the sterile packaging has been opened or compromised
• Do not use if contamination is suspected
Always follow the storage and handling information printed on the original product packaging.
Important Information
ULTRAJECT® U-100 Syringes with Needle are intended for professional injection applications where the U-100 calibration and 31G × 8mm needle specification are appropriate.
The syringe itself does not determine whether it is suitable for a particular medication, injectable aesthetic product or treatment.
Before use, the practitioner is responsible for confirming:
• The intended injectable product is suitable for the proposed route of administration
• The syringe is compatible with the intended product
• U-100 calibration is appropriate
• The 31G needle gauge is appropriate
• The 8mm needle length is appropriate
• The correct dose has been determined
• The correct administration volume has been calculated
• The appropriate administration technique is being used
• The patient has been appropriately assessed where required
• All applicable manufacturer and professional guidance is followed
Important: U-100 syringe markings must not be assumed to represent the dosing units of an unrelated medication or injectable product.
Incorrect interpretation of syringe graduations can result in dosing errors.
Do not use if:
• The sterile packaging is damaged or compromised
• The individual package has already been opened
• The syringe or needle appears damaged
• The product has passed its stated expiry date
• Product integrity is in doubt
• Contamination is suspected
Never reuse or attempt to resterilise a used syringe.
Dispose of the complete syringe and integrated needle immediately following use in an appropriate approved sharps container.
For use by appropriately trained professionals.
Single use only.
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