Short 30-31g 8mm Luer Lock or Luer Slip Needles Only

Understood. Already have the 31 gauge 8 mm versions from two common brands for shots. Also keep 27 gauge inch-and-a-half tips on 3 ml luer-lock syringes for mixing, filtering and similar tasks.

Not every luer-lock needle is automatically too long or wrong for shots. The point is having the option to use a longer lower-gauge tip for mixing and filtering while still having an insulin-style syringe available as well.

Luer-lock or slip versions exist in every gauge and wall thickness. Used nothing else for years. Prefer lock style because the drawing needle never gets reused for the actual shot. Costs only a little more to have a fresh sharp tip that never touched a stopper. Hospitals do the same thing.

Picked up two hundred one-ml luer-slip syringes that came with 27 gauge half-inch needles. Drawing goes quicker that way. For the actual shot I switch to a 30 gauge half-inch tip from another brand because it stays sharp and only touches skin. Extra dead space and the extra step are the downsides. Ended up going back to the 31 gauge fixed insulin syringes. Found a trick to make those painless: press lightly first and if it might sting, shift two or three millimeters sideways until it feels fine.

Will remember that. Last injection started with a quick pinch but then went smoothly.

Have hundreds of barrels and drawing needles. The 29-30 gauge versions from one popular brand run about eight or nine dollars. Not an accident that none of those sizes are stocked, though swapping each time is no big deal if wanted. Rely on half-inch 29 gauge half-ml insulin syringes instead, also in large quantities. Chose 29 gauge because draw time improves noticeably over 30 gauge. Warm the vial in a small container of warm water while handling other tasks.

Would not have expected the jump from 30 to 29 to change draw speed much. Good to know. Already have a couple hundred 30 gauge five-sixteenth insulin syringes bought for another purpose. The clinic supplied barrels plus 21 and 25 gauge inch needles. Planned to draw with those then swap to a 29-30 gauge for the shot so the supplied items would not go to waste.

Use them to reconstitute peptides, though also bought separate three and five ml syringes and needles. The clinic ones arrived individually wrapped.

A 29 gauge opening gives roughly twenty to thirty-five percent more area for flow than 30 gauge. The small increase in radius squares in effect.

Gave up on that route. Plenty of 23-25 gauge tips already for mixing. Will stay with the 31 gauge versions from the two usual brands now that they feel familiar. Do you warm anything to make drawing easier?

Warm what? Oil vials, yes. Peptide vials, no.

Got it, misread earlier.

Handle peptides with five-sixteenth to half-inch 30 gauge needles most of the time.

Same approach but with five-sixteenth 31 gauge. Those feel reliable now. Just aim for the center of the vial and draw slowly.

Have a couple of those that arrived with poultry injection supplies.

Replying mainly to agree again after missing it earlier. Dead space with luer-lock setups measures around 0.05 ml, which adds up and must be planned for when drawing before any swap. Reclaiming the leftover after injection is not realistic due to contamination risk. Unless the process is different than described, luer-lock adds unavoidable waste. Will keep back-filling the 30 gauge insulin syringes instead.

A link appeared earlier in the thread for short luer-lock needles from one common brand, including some 31 gauge options possibly four millimeters. It is still in the discussion. Dropped the plan myself because four boxes of the usual 31 gauge eight-millimeter syringes are already on hand. Reconstitute two vials roughly a week ahead of injections so no need to change.

Great, thanks for the reminder. It was a screenshot that got overlooked at first. Located them.