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 pen needles in boxes of 20 to go with the pen devices in our range. They are the replacement needle for the Retatrutide pen kits and the fitting for our reusable peptide pen, and they use the universal screw-on thread shared by most pen devices.

What are pen needles

A pen needle is a small, disposable needle assembly designed to screw onto the threaded tip of a pen device. It has a plastic hub, a fine steel cannula that points both ways (one end pierces the pen cartridge septum, the other is the working tip), and two caps. The outer cap doubles as a tool for removing the needle after use. Unlike an insulin syringe, the pen needle has no barrel; the pen itself holds the liquid and sets the volume.

Pen needles 32G 4mm: what the numbers mean

• **32G:** the needle gauge. Higher gauge numbers mean thinner needles, and 32 gauge is among the finest in common production.
• **4 mm:** the length of the exposed working tip. It is among the shortest pen needle lengths made.
• **Screw-on fit:** the hub threads onto any pen built to the common pen needle thread standard.

A short, fine needle is also stiffer than a long one of the same gauge, so it seats squarely and resists bending when fitted.

Pen needles Australia: specifications

Each needle sits in its own sterile container sealed with a peel-off paper tab. Keep the box dry and at room temperature, and do not use a needle whose seal is torn.

Pen needles price: the 20 pack

A box of 20 is our standard size and exactly matches the 20 needles in each Retatrutide pen kit, so one box gives a full refill. The kits themselves are priced below the pen alone, which makes them the cheaper way to get a first set of needles with a pen.

Pen needles that fit our pen range

The needles fit the pre-filled Retatrutide pen in every strength and our reusable peptide pen, which takes 3 mL cartridges. They are not used with vials; for drawing diluent into a vial, use an insulin syringe instead.

Fitting and disposing of pen needles

In the lab, wipe the pen septum with an alcohol swab, peel the paper tab, and screw the needle on straight until it stops. After use, replace the large outer cap, unscrew the needle within it, and drop the capped needle into a rigid sharps container. Never leave a needle attached to a stored pen, since it can let air in or liquid out.

Why buy pen needles with your pen order

A pen is no use without a needle, and a missing box can hold up a planned experiment. Ordering both together means they arrive in the same parcel. Other consumables are in lab supplies.

Questions about Pen needles 32G 4mm 20 pack