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🖊️ Mark it like a pro—because your lab deserves the best.
The Janlaugh 5 Pack Alcohol Resistant Laboratory Markers feature dual tips (0.5mm fine and 1.0mm broad) with waterproof, alcohol-resistant ink that remains clear even at -80°C. Designed for industrial, lab, and hospital use, these markers write on multiple surfaces including glass and plastic, offering a versatile, durable solution with color-coded pens for efficient labeling.
| ASIN | B0CYGBV7Q2 |
| Additional Features | Waterproof |
| Age Range Description | Adult |
| Best Sellers Rank | #39,935 in Office Products ( See Top 100 in Office Products ) #418 in Permanent Markers & Marker Pens |
| Brand | Janlaugh |
| Brand Name | Janlaugh |
| Color | black, red, blue |
| Customer Reviews | 4.0 out of 5 stars 66 Reviews |
| Grip Type | Standard |
| Included Components | 3 x Black double ended pens, 1 x Red double ended pen, 1 x Blue double ended pen |
| Ink Base | Alcohol |
| Ink Color | Black, Red, Blue |
| Is Waterproof | true |
| Item Dimensions | 6.3 x 3.15 x 0.63 inches |
| Line Size | 1 millimeters |
| Manufacturer | Janlaugh |
| Manufacturer Part Number | Janlaugh-DZNTD-11497 |
| Marker Type | Permanent Marker |
| Material Type | Plastic |
| Number of Items | 5 |
| Number of Pieces | 5 |
| Pattern | Solid |
| Point Type | Fine |
| Special Feature | Waterproof |
| Style | Chisel |
| Surface Recommendation | Glass,plastic |
| Target Audience | Adult |
| Unit Count | 5.0 Count |
| Water Resistance Level | Waterproof |
| Writing Instrument Form | Marker Pen |
H**K
Finally, a Lab Marker That Survives Alcohol and My Coworkers
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.
M**O
Very good
I am very satisfied with the quality
A**N
Good marker for indoor use
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.
E**T
ONLY RESISTANT TO IPA
ONLY RESISTANT TO IPA. Comes right off with 70% ethanol or methanol as well as acetone/ethanol. Not good for gram stains or wright stains. Other than that, very juicy markers. They write wonderfully but will spread/bleed on frosted slides.
H**G
Good ethanol resistance
It is ethanol resistant from all the 70% Etoh in our lab and is good on multiple surfaces. the best I've ever tested.
D**N
These are great
Writes on glass, plastic etc no smearing and won’t come off. Really like the dual tips.
M**A
Not good resistance to alcohol
They are resistance to water and TE buffer, but I found that this marker are not much resistance to ethanol alcohal.
A**R
we love them - for lab research
we searched high and low for good alcohol-resistant markers for lab research and we tried these and love them! we wrote on a tube and tried to remove with alcohol wipe and it stayed on. Glad we tried them.
J**E
super
super
A**R
Great for lab use
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
Trustpilot
2 weeks ago
2 weeks ago