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Insulin Syringes 29G × 0.5 mL
Sterile 0.5 mL insulin syringes with fixed 29G × 1/2 in needle for small-volume transfers
Overview
The 29G × 0.5 mL insulin syringe is the compact companion to our 31G × 1 mL model. It has a half-milliliter barrel graduated in 0.01 mL increments (50 units on the U-100 scale), a permanently attached 29 gauge, 1/2 inch (12.7 mm) needle, and a low-dead-space plunger. Because the same number of graduations is spread over half the volume, the markings are more widely spaced and easier to read when measuring very small quantities.
Researchers use this format when transferring small volumes of reconstituted peptide solution — for example, moving measured aliquots from a stock vial into sterile empty vials, or preparing dilution series for assays. The 29G needle is slightly wider than a 31G, which makes it a little more rigid and lets viscous or concentrated solutions pass more freely, while the longer 1/2 inch length reaches comfortably to the bottom of a 3 mL vial.
Units, volume and mass
A U-100 barrel is graduated in insulin units rather than in millilitres or milligrams, so the mark you stop at only means something once the concentration in the vial is known. The syringe unit converter maps units to volume to mass, and the reconstitution calculator gives you the concentration to feed it.
Certificate of analysis
Every lot of Insulin Syringes 29G × 0.5 mL is released against its own lot documentation, and where the manufacturer issues a certificate of analysis for it, that certificate is the record for the lot rather than a generic document for the compound. The lot number on the certificate matches the lot number printed on the label you receive — the vial label itself, where the product is vialled — so the record and the material it describes can always be reconciled.
This listing carries no purity percentage, so none is claimed for it here. Where the manufacturer issues analytical documentation for a lot of this item, it is passed on unaltered — ask and we will send whatever exists.
No lot certificate is on display on this page at the moment. That is a publishing state and not a testing one: lots are released and documented as described above whether or not the document is posted here, and we will send what exists for the lot in stock, or for a lot already on your bench, by its number.
Certificates are available on request before you order as well as after, with no account and no charge. Request the certificate for this listing, read the testing and documentation policy in full, or see how to read a peptide COA.
Questions about Insulin Syringes 29G × 0.5 mL
What does 29G × 0.5 mL mean?
29G is the needle gauge, corresponding to an outer diameter of roughly 0.33 mm, and 0.5 mL is the syringe capacity. The fixed needle is 1/2 in (12.7 mm) long. The barrel is marked in 0.01 mL steps, equal to one unit on the U-100 insulin scale, up to 50 units.
When would I choose this over the 31G × 1 mL syringe?
Choose the 0.5 mL model for small, precise transfers — aliquoting, dilution series or dispensing into assay vessels — where widely spaced graduations help accuracy, or when a slightly larger-bore needle is preferred for concentrated solutions. Use the 1 mL model for drawing diluent volumes above half a milliliter.
Are these syringes sterile and single-use?
Yes. Each syringe is sterilized, individually sealed, and fitted with protective caps on both needle and plunger. They are single-use devices; use a fresh one for every vial entry and place used syringes directly into a sharps container.
What quantities are available?
The 29G × 0.5 mL syringe is offered in a pack of 10 for occasional use and a box of 100 for laboratories doing regular aliquoting or dilution work. The 31G × 1 mL model is stocked separately in packs of 10, 50 and 100.
Can the needle be removed or changed?
No. The needle is permanently integrated with the barrel, which is what gives the syringe its low dead space. If a detachable-needle syringe is required for a particular procedure, a luer-lock syringe and separate needles should be used instead.
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