Three insulin syringes with pink plungers and 100 unit markings on a white background

NovaPep

Buy Insulin Syringes Australia: U-100 Insulin Syringes, 0.3 to 1 mL With 29G and 31G Needles

$20AUD, GST included

In stock in Australia, batch certificate ready

Certificate of analysis published for every batch
Third-party HPLC purity and MS identity testing
Dispatched same day before 3pm cut-off, tracked Australia-wide
Research use only, sold to adults aged 18 and over

Buy syringes for peptides online in Australia, with U-100 insulin syringes in 0.3, 0.5 and 1 mL sold as a 30 pack or singly. Our syringes for peptides are U-100 insulin syringes, small sterile barrels with a fixed fine needle, graduated in units and sized for measuring reconstituted research peptides. All of them share the U-100 scale, so 1 mL reads as 100 units and 0.1 mL reads as 10 units, and the barrel markings line up with the unit results from the peptide calculator without any conversion. The singles are a 1 mL barrel with a 29G 12.7 mm needle, plus 1 mL, 0.5 mL and 0.3 mL barrels that each carry a 31G 6 mm needle. Each one is sterile, wrapped on its own and has a fixed needle protected by an orange cap. Being consumables, they are not HPLC tested by lot like our peptides, although every vial you draw from has its own certificate in the COA library. Add bacteriostatic water to the order so a fresh peptide vial can be prepared as soon as it arrives. Store unopened syringes in a dry place at room temperature away from direct sunlight, use each one only once and put it in a sharps container afterwards.

For laboratory research use only. Not for human or veterinary use. Not TGA approved. See the NovaPep research use policy.

What Is an Insulin Syringe?

An insulin syringe is a compact disposable syringe with a very thin needle permanently bonded into its tip, and its barrel is printed in units rather than millilitres. It was designed around the standard strength of one hormone, yet those same features have made it the normal tool for measuring small volumes of reconstituted peptide solution in the lab. U-100 insulin syringes are for sale in Australia as a 30 pack or as single syringes, ready to order online from local stock.

These are small syringes with fine needles, graduated in units instead of millilitres. Reconstitution calculators give their answers in U-100 units, which is why these became the default bench tool for reconstituted peptides, as the barrel and the screen show matching numbers.

The parts of an insulin syringe

Three components make up each syringe. The barrel is clear polypropylene of medical grade. The plunger rod finishes in a stopper of rubber or elastomer, which seals on the inner barrel wall. A stainless steel cannula forms the needle and is glued into the barrel nose. A fine layer of silicone oil coats both the needle and the inner barrel wall so the needle passes easily through a stopper and the plunger glides.

How a Fixed-Needle Syringe Measures Small Volumes

The most important design point is that there is no hub. With a standard syringe and a removable needle, some liquid remains caught in the hub and the base of the needle when the plunger is fully depressed. This residue, called dead space, can be as much as roughly 80 microlitres on high dead space designs. A fixed-needle insulin syringe leaves just a few microlitres. If the entire measurement is only 20 or 30 microlitres, that gap determines whether what you dispense matches what you read on the scale.

So when small amounts must be measured, the plainest answer to what syringe is best for peptides, which is a barrel with a fixed needle and unit markings. A tuberculin syringe looks much the same and also holds 1 mL, yet it is marked in millilitres, normally to two decimal places, and often uses a removable needle with all the added dead space that involves. It fits a method written in millilitres, not a calculator giving units. A general Luer syringe of 3 mL or 5 mL, the other common lookalike, works for shifting bulk diluent but much too coarse to read parts of a tenth of a millilitre.

Choosing Syringes for Peptides by Gauge, Barrel and Length

Two figures decide which to buy. The best syringe size for peptides depends on the volume you measure most often, and the best gauge syringe for peptides depends on the vial you are drawing from. A larger gauge number means a finer needle, so 31G goes through a stopper with less effort and is less prone to coring it, while 29G moves liquid more quickly.

30 pack, 1 mL 29G becomes the cheapest route per syringe once a job needs seven or more. Use it for most measured draws and for adding water to vials.
1 mL 29G 12.7 mm, our pick for the best syringe length for peptides kept in tall bottles such as the 30 mL water vial, and the syringe that ships in our water bundles.
1 mL 31G 6 mm, a tidy match for short vials like a 10 mg peptide vial or a 3 mL water vial.
0.5 mL and 0.3 mL 31G 6 mm, which for low volumes are the best size syringes for peptides, because spreading 50 or 30 units along the barrel makes each mark simpler to read.

What, then, is the best syringe for peptides on an ordinary bench? Begin with the 30 pack and add a handful of 0.3 mL singles if your protocol uses very small volumes. Put simply, choose the smallest barrel able to hold your largest single measurement, and that is the best size insulin syringe for peptides in your method. These consumables are sold only to adults aged 18 and over.

Every syringe in our range follows that U-100 scale, so 1 unit always equals 0.01 mL no matter which barrel you choose. You will find them among our laboratory supplies next to the diluents they are paired with, so a single cart can carry the peptide, the water and the tool to measure it.

U-100 Insulin Syringe Specifications

Product name	U-100 insulin syringes
Options	Pack of thirty 1 mL 29G. Singles in 1 mL with 29G 12.7 mm, or 1 mL, 0.5 mL or 0.3 mL with 31G 6 mm
Graduation scale	U-100, so 1 mL is 100 units and 0.1 mL is 10 units
Capacity per barrel	1 mL barrel holds 100 units, 0.5 mL holds 50 units, 0.3 mL holds 30 units
Needle type	Permanently fixed, either 29G 12.7 mm or 31G 6 mm, with an orange cap
Presentation	Sterile, individually wrapped, single use
In the box	The pack holds thirty 1 mL syringes, a single holds one syringe in your chosen size
Storage conditions	Room temperature in a dry spot out of direct sun, left sealed in the wrapper until needed
Stock status	In stock
Intended purpose	Only for measuring diluent and solutions of research peptides in a lab

Pick the barrel that fits the volumes you handle most often. The pack takes care of diluent transfers and everyday draws, while the smaller singles make low volumes far easier to read.

Each syringe we stock is a sterile single-use plastic barrel carrying U-100 unit markings, with the needle permanently fixed to the tip under an orange cap. The 30 pack contains 1 mL 29G barrels, thirty in all, each with a pink plunger. Each of the four single options is one syringe, either a 1 mL barrel fitted with a 29G 12.7 mm needle, or a 31G 6 mm needle on a 1 mL, 0.5 mL or 0.3 mL barrel. They all read in units, with 100 units filling 1 mL, so a different barrel size keeps the same scale and only changes how finely a millilitre is divided.

Handling, Sterility and Storage of Insulin Syringes

Every syringe stays sealed and sterile until you open the wrapper, and it is intended for a single draw. Once a needle has gone through a stopper it is blunter and may core the rubber or bring in contamination, so it must never go back into a vial. Make sure the wrapper is undamaged before use and throw away any syringe with a broken seal. U-100 insulin syringes for sale in Australia leave our shelves by tracked post, so they reach your bench in good condition.

The most expensive error is confusing scales. U-40 syringes look alike but are marked at 40 units per mL, so reading one against a U-100 calculation would be off by a factor of 2.5. We only carry U-100 barrels, and on any calculator-driven bench the best insulin syringe for peptides should always be U-100. The lot-tested products are the peptides you draw up, and how to interpret their HPLC and mass spectrometry results is covered in our guide to reading a certificate of analysis.

Whatever size you choose, we strongly recommend drawing and dispensing in a single motion and never using the syringe to store liquid. Over time the silicone lubricant can release tiny droplets into the solution, and formulation labs regard those droplets as a recognised cause of protein aggregation and false readings in particle assays. Leave peptide solution in a barrel for hours and it also has more plastic to cling to. When cost decides your best insulin syringe for peptides, this habit counts for more than the brand printed on the packet, and our complete guide to insulin syringes in Australia explains needle length and gauge.

As an example, putting 2 mL of water into a 10 mg vial takes two complete draws of a 1 mL barrel and yields 5 mg per mL. For any other mix, the peptide calculator converts the numbers into barrel units. For the complete aseptic technique, see our guide to reconstituting peptides.

Keep unopened syringes dry at room temperature and away from direct sunlight, leaving them in their wrappers until the moment you use them. Place used syringes straight into an approved sharps container.

The Syringe Pack Compared With Bacteriostatic Water Plus One Syringe

For a one-off reconstitution needing just one syringe, the best syringe to use for peptides is the 29G 1 mL sold with our bacteriostatic water range for a small extra charge. As soon as a study runs to more than a few draws, the 30 pack costs less and leaves spares on the bench. Across a long series, it is usually our reply when labs ask what syringes are best for peptides. Buy the right peptide syringes for your protocol in the same cart as your vials.

Labs making up IGF-1 LR3 in 0.6% acetic acid generally need one full 1 mL draw of the acid, so a 1 mL barrel is the right fit for that step. If you want a first order with everything in one box, the GHK-Cu Starter Kit already contains water and a syringe.

Other Names for U-100 Insulin Syringes

You may see this item called U-100 syringes, unit syringes or plain insulin syringes, and sizes may be given as 1 cc, 1 mL, half-cc, 0.5 mL or 0.3 cc. A cc and a mL are the same volume, and 29G or 31G give the needle gauge, which may also be written as 29 gauge or 31 gauge.

Because no removable hub sits between the barrel and needle to hold liquid, fixed-needle syringes such as these are also known as low dead space syringes. Tuberculin syringes are a separate product marked in millilitres instead of units.

Buy Syringes for Peptides Online in Australia

In Australia these syringes count as medical devices rather than medicines, and several sponsors have insulin syringes entered on the Australian Register of Therapeutic Goods in that category. They are neither a scheduled poison nor a prescription item. Pharmacies sell them over the counter, generally boxed in hundreds, while registered insulin users with diabetes get them free through the National Diabetes Services Scheme. This subsidy is unrelated to lab purchasing, and our article on where to get insulin syringes in Australia sets the options out together.

Labs looking for the best insulin syringes for peptides usually pick a 31G needle for fine draws and 29G when liquid needs to move faster.

One gauge in a box of 100 is frequently more than a lab project requires, so plenty of teams buy insulin syringes online alongside their diluents instead. NovaPep holds every size in Australian stock as a lab consumable used to measure diluent and reconstituted research solutions. They are sold to adults 18 and over and are not for human or veterinary use. You can buy them as a pack or as single barrels, so each bench can pick a syringe to suit the volume it works with. Our bacteriostatic water with an optional syringe puts the diluent and the measuring tool in one order.

Pharmacies stock different barrel sizes, needle lengths and scales from one counter to another. Buying syringes in the same cart as your vials and water keeps the whole setup on one U-100 scale, so for one delivery with everything, NovaPep is the best place to buy syringes for peptides. We sell online only, without a shopfront, and post from Australian stock across every state and territory. Pay before 3pm on a business day and your order leaves that day, and the shipping information page lists delivery times.

Insulin Syringes at a Glance

U-100 syringes marked in units

Compact sterile syringes graduated in units, with 100 units filling 1 mL. Those markings line up with the units that peptide calculators display.

Pack of 30 or single barrels

Choose a 30 pack of 1 mL 29G syringes. Singles come in 1 mL, 0.5 mL or 0.3 mL.

Choosing a syringe size for peptides

Use the 1 mL barrel for diluent transfers and most draws, and the smaller 0.3 mL and 0.5 mL barrels to read small volumes more clearly.

Fixed needle, low dead space

The needle is bonded into the barrel tip, so no hub traps liquid. Dead space stays at a few microlitres, which keeps small measured volumes accurate.

Store them sealed and dry

Leave syringes in their wrappers at room temperature away from direct sun. Each is single use and goes into a sharps container afterwards.

Sterile, with one scale throughout

All syringes are sealed sterile and marked on the U-100 scale, so there is never a U-40 conversion to make.

Insulin Syringes FAQ

What is a U-100 insulin syringe and why is the needle fixed?

It is a small sterile syringe marked in units, where 100 units fill 1 mL and 1 unit equals 0.01 mL. The needle is bonded into the barrel tip, so there is no hub to trap liquid. That keeps dead space to a few microlitres, which matters when a whole measurement is only 20 or 30 microlitres.

What is the best syringe for peptides in a laboratory?

The best syringes for peptides work are sterile fixed-needle U-100 insulin syringes, since their unit markings agree with reconstitution calculators and they have no hub to hold back liquid. Buy the 30 pack of 1 mL 29G for everyday work, then add a few singles in 0.3 mL or 0.5 mL when your protocol measures small volumes.

What size syringe is best for peptides?

For most labs the best size syringe for peptides is the 1 mL barrel, which handles most draws and diluent additions. Move to a 0.3 mL or 0.5 mL barrel for small volumes where wider gaps between marks help. A 31G 6 mm needle fits short vials, and the 29G 12.7 mm needle reaches down into taller bottles.

What do laboratories use U-100 syringes for?

Labs use them to measure diluent and reconstituted peptide solution in units, with 100 units equal to 1 mL, matching what reconstitution calculators report. NovaPep supplies them strictly as research lab consumables to buyers 18 and older, and never for use on people or animals.

Is there a certificate of analysis for the syringes?

No. Syringes are sterile consumables, so they do not go through HPLC or mass spectrometry like our peptides. Every syringe is wrapped individually and stays sterile until opened. The peptides you measure with them have lot certificates you can view in the COA library.

Which is the better buy, a syringe pack or water bundled with a syringe?

Go for a water vial with one syringe added if a single reconstitution is all you need. Go for the pack of 30 when a study needs more than six or seven draws, because every syringe is single use and the pack is cheaper per syringe.