- Lot-matched certificate of analysis
- Ships next business day, tracked
Insulin Pen Needles 32G × 4 mm
Sterile single-use 32G × 4 mm pen needles, universal fit, box of 100
Overview
These are sterile, single-use pen needles in the 32 gauge, 4 millimetre configuration, supplied one hundred to a box. Each needle is individually sealed with a paper tab, screws onto standard threaded pen-style devices, and carries the usual double protective arrangement of an outer shield and an inner cap. They contain no peptide, medication or fluid of any kind — this is hardware.
Gauge and length are the two numbers that matter. Gauge runs inversely to diameter, so 32G is one of the finer sizes commonly available, with an outer diameter around 0.23 mm; 4 mm is at the short end of the pen-needle range. Modern needles in this class are typically thin-walled to preserve internal bore, and the cannula is silicone-coated with a multi-bevel lancet grind, both of which reduce penetration force. Those construction details are what separate one 32G needle from another far more than the gauge number does.
Units, volume and mass
Graduations on an insulin-style barrel are units, and a unit is a volume and not a mass — what that volume carries depends entirely on how the vial was made up. The unit converter does units to mL to mcg; the reconstitution calculator does the vial.
Certificate of analysis
Every lot of Insulin Pen Needles 32G × 4 mm 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 Pen Needles 32G × 4 mm
What does 32G × 4 mm mean?
32G is the gauge, an inverse measure of outer diameter corresponding to roughly 0.23 mm — one of the finer sizes in general use. 4 mm is the cannula length measured from the hub face to the tip, at the short end of the pen-needle range.
Will these fit any pen device?
They use the standard threaded hub found on most pen-style devices, which is why this format is described as universal fit. Some proprietary devices use non-standard threads or a bayonet attachment, so confirm compatibility with the specific device before ordering in quantity.
How do these differ from insulin syringes?
Insulin syringes are complete units with an integrated fixed needle and a graduated barrel. Pen needles are the cannula alone, screwed onto a separate pen device that meters the volume. Choose by which part of the workflow you are equipping, not by gauge.
Are they sterile, and can they be reused?
Each needle is sterile until its individual paper seal is broken, and every unit is single-use. Reuse compromises sterility and deforms the tip — imaging studies of reused needles show visible damage after one puncture. Dispose of each needle after a single use.
Does the box contain any peptide or diluent?
No. This is hardware only: one hundred sterile pen needles with their shields and caps. Bacteriostatic water, vials and any research compounds are ordered separately, and nothing in this box is pre-filled with fluid of any kind.
Related
