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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 | #29,741 in Office Products ( See Top 100 in Office Products ) #332 in Permanent Markers & Marker Pens |
| Brand Name | Janlaugh |
| Color | black, red, blue |
| Customer Reviews | 4.1 4.1 out of 5 stars (59) |
| 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 |
| Style | Chisel |
| Surface Recommendation | Glass,plastic |
| Target Audience | Adult |
| Unit Count | 5.0 Count |
| Water Resistance Level | Waterproof |
| Writing Instrument Form | Marker Pen |
D**N
These are great
Writes on glass, plastic etc no smearing and won’t come off. Really like the dual tips.
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.
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.
M**O
Very good
I am very satisfied with the quality
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.
A**R
Perfect lab marker
Writes clearly on all common laboratory consumables (tubes, flasks, plates, dishes). Having a fine and extra fine tip on the same marker is incredibly useful. I've tested extensively and can confirm they are completely resistant to 70% ethanol and bleach.
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
A**R
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
5 days ago
2 months ago