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Insulin Syringes 31G × 1 mL
Sterile 1 mL insulin syringes with fixed 31G × 5/16 in needle for lab reconstitution
Supplied for laboratory research use only. Not for human or veterinary use, and not intended to diagnose, treat, cure or prevent any disease.
Overview
These 1 mL insulin syringes are the general-purpose measuring tool of the peptide research bench. Each unit is a single-piece syringe with a permanently attached 31 gauge, 5/16 inch (8 mm) needle, a clear barrel graduated in 0.01 mL increments to 1 mL (100 units on the U-100 scale), and a low-dead-space plunger tip. They arrive sterile, individually wrapped and ready to use.
In reconstitution work the syringe is used to draw a precisely measured volume of bacteriostatic or sterile water and introduce it into a lyophilized peptide vial. The 31G needle is fine enough to pass through a rubber stopper repeatedly with minimal coring, while the 1 mL capacity is well matched to the 1–3 mL volumes typically used to dissolve a 5 mg to 20 mg vial. The same syringes are also used to withdraw measured aliquots of reconstituted solution into sterile empty vials for storage or further dilution.
MyPeptide stocks these syringes in a pack of 10, a pack of 50 and a full box of 100, so both occasional users and higher-throughput laboratories can order in the quantity they need. A 29G × 0.5 mL version is available separately for researchers who prefer a shorter, finer-graduated barrel. All syringes are sold as laboratory consumables for research use only.
Questions about Insulin Syringes 31G × 1 mL
What does 31G × 1 mL mean?
31G is the needle gauge — a fine needle roughly 0.26 mm in outer diameter — and 1 mL is the syringe capacity. The needle on this model is 5/16 in (8 mm) long and permanently attached. The barrel is graduated in 0.01 mL steps, which correspond to single units on the U-100 insulin scale.
Why are insulin syringes used for peptide reconstitution?
Their fine fixed needles pass through vial stoppers with minimal coring, the narrow barrel and 0.01 mL graduations make small volumes easy to measure, and the low dead space means very little diluent or peptide solution is left behind. Those properties suit the small volumes involved in laboratory peptide preparation.
Are the syringes sterile and single-use?
Yes. Each syringe is sterilized and individually sealed with protective caps on the needle and plunger. They are single-use devices; a fresh syringe should be used for each vial entry and every used syringe should go straight into a sharps container.
What pack sizes are available?
We offer a pack of 10 for occasional reconstitution, a pack of 50 for regular use, and a full box of 100 for laboratories preparing many vials or aliquots. The 29G × 0.5 mL model is stocked separately in packs of 10 and boxes of 100.
How do these differ from the 29G × 0.5 mL syringes?
The 31G × 1 mL syringe has a thinner needle and twice the capacity, making it the more versatile tool for drawing diluent. The 29G × 0.5 mL model has a slightly larger-bore needle and its scale is spread over a shorter volume, which some researchers prefer for very small transfers.
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