Pen, 5 Pack - Alcohol Resistant Laboratory Markers with Dual Tips, Industrial Freezer Pens for Lab and Hospital Use

I rarely write reviews for lab supplies because usually the review is just “yep, it’s a marker.” But these deserve it. I use them constantly in the lab on glass bottles, sample vials, tube lids, plastic containers, random mystery containers someone abandoned in the fridge three months ago — and the writing actually stays put. Most “lab-safe” markers seem to give up the second alcohol touches them. These don’t. They survive wiping, handling, glove abuse, and the general chaos of a busy lab environment. No smearing, no disappearing ink, no trying to decipher whether that says “sample 6” or “sodium chloride.” The writing stays sharp and readable. The fine tip is perfect too. Small enough to label tiny lids without looking like a toddler wrote it with a crayon. Ink flows well, dries quickly, and doesn’t blob everywhere. At this point I guard these markers like a feral raccoon protecting a French fry. If one disappears off my bench, I notice immediately.

super

Great marker. Dries fast and durable. Will wash off in outside settings during rain. For inside projects they work great. Good value for the money.

These markers are great for lab use especially on small tubes and the ink doesn't come off if you spray with IPA, just avoid rubbing it right after writing

It is ethanol resistant from all the 70% Etoh in our lab and is good on multiple surfaces. the best I've ever tested.