Buy Pen Needles 32G 4mm in Australia

Buy pen needles in Australia from Macropus Peptides: a 20 pack of 32G 4mm pen needles with a universal screw-on fit. They thread onto the tip of our pre-filled Retatrutide pens and our reusable peptide pen, and onto most pen devices built to the common screw-thread standard. At 32 gauge the cannula is very fine, and at 4 mm it is short, which keeps the needle stiff and simple to fit and remove. Each needle is sterile, sealed under a peel-off paper tab, protected by an outer and inner cap, and intended for one use only before going into a sharps container. Twenty needles match the number supplied in each Retatrutide pen kit, so a box is the natural refill. Order with your pen, swabs and sharps container and the parcel ships from local Australian stock. For laboratory use by adults 18 and over.

Compound	Pen needles 32G 4mm
Amount	20 pack
Form	Laboratory supply
Category	Lab supplies
Storage	See label

Buy Pen Needles 32G 4mm Australia: 20 Pack

Macropus Peptides sells 32G 4mm needles in boxes of 20 to go with the pen devices in our range. They are the replacement needle for both Retatrutide pen kits and the fitting for our reusable peptide pen, and they use the universal screw-on thread shared by most pen devices. A single box is a full refill for one kit.

What are pen needles

A pen needle is a small, disposable needle assembly that screws onto the threaded tip of a pen device. It has a plastic hub, a fine steel cannula sharpened at both ends, and two protective caps. The rear point pierces the rubber septum of the pen cartridge when the hub is screwed down; the front point is the working tip. Unlike an insulin syringe, a pen needle has no barrel, because the pen holds the liquid and its dial sets the volume.

How pen needles are used in the lab

Each session starts with a fresh needle. The cartridge septum is wiped and left to dry, the paper tab is peeled from the needle container, and the hub is screwed on straight until it stops. Both caps come off, and a short priming step dispenses a small volume into waste until liquid shows at the tip, clearing air from the cannula. When the session ends the large outer cap goes back on and the needle is unscrewed inside it, so the point is never handled.

Pen needles 32G 4mm: what the numbers mean

• **32G:** the gauge; higher numbers mean thinner steel
• **4 mm:** length of the exposed working tip
• **Screw-on:** fits the common pen needle thread

Thirty-two gauge is among the finest cannulas in common production, and 4 mm is among the shortest lengths made. A short, fine needle is also stiffer than a long needle of the same gauge, so it seats squarely on the pen and resists bending when fitted. We stock this one size, chosen to match every pen we sell.

Pen needles Australia: specifications

Each needle sits in its own sterile container sealed with a peel-off paper tab, and each has an outer cap and a thin inner cap. Twenty needles come in a box, and every one is for a single use.

Pen needles price: the 20 pack

A box of 20 is among the lowest-priced items in our supplies range and matches exactly the 20 needles in each Retatrutide pen kit. Because the kits cost less than a pen bought alone, they are the cheaper way to get a first set of needles with a pen, and the box is the refill after that.

Pen needles that fit our pen range

The needles fit the pre-filled Retatrutide pen in all four strengths, both pen kits, and our reusable peptide pen, which takes standard 3 mL cartridges. They are not used with vials: to draw diluent into a vial, use an insulin syringe, which has its own graduated barrel. Before fitting a needle to another device, check that it has a screw thread rather than a push-on or proprietary fitting.

Best place to buy pen needles Australia

• Sold online at macropuspeptides.com, priced at $9.99
• Same-day dispatch from Australian stock for orders paid before 2pm AEST on a business day
• Tracked delivery Australia wide: standard in 2 to 5 working days, express in 1 to 2 working days
• Payment by PayID or bank transfer, with your order ID as the reference

Order pen needles online

• Add the 20 pack to your cart
• Add a pen or pen kit
• Add swabs and a sharps bin
• Complete checkout as an adult

Pen needles: handling, storage and disposal in Australia

Keep the box closed, dry and at room temperature, and discard any needle whose seal is torn or damp. Never leave a needle attached to a stored pen, since it can let air into the cartridge or solution out of it. Used needles go, capped with their outer cap, into a rigid sharps container, never into general waste. Sealed bins are taken to a council or state health sharps drop-off point, or collected by a licensed clinical waste contractor, depending on where you are in Australia.

Pen needles for sale Australia wide

Boxes are dispatched from our Australian stock with the pens and supplies they were ordered with, to capital cities and regional postcodes alike. Swabs for the septum wipe are in the alcohol swabs 100 pack, and the rest of the consumables are listed under lab supplies.

Questions about Pen needles 32G 4mm 20 pack