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It's 17cm long, which is actually a bit shorter than some of the other pens we've tested, and the 3ml capasity is usually enough for a standard research cycle without having to swap cartridges mid-experiment.
The adjustable dose range from 0.01ml to 0.6ml covers most of our GLP-1 and retatrutide work pretty well, and we needed something that wasn't tied to a specific peptide or concentration—this one's basically a mechanicla press cap system, no batteries to fail, and the grey/blue color coding helps us keep it separate from other lab gear.
Most buyers go with the printed label option for batch tracking, and the disposable design means we're not worrying about cross-contamination between runs, though it's not really suited for high-volume veterinary work where you'd want a reusable metal barrel.
We usually have stock on these, but confirm lead time if you need more than 50 units or so—the MOQ is reasonable, and teh COA from the China origin batch we got last time was tight on HPLC purity specs, better than reagent grade for this application actually.
One thing I didn't think to ask until we got them: press cap seals well enough for storage at room temp, but if you're working with volatile solvents in the cartridge, you'll want to double-check the seal integrity after a few days.
