Anonymous2024-04-19
Connecticut, United States 
perfect fpr writing on small tabs
Scott N.2024-01-18
Texas, United States
So far so good, but we have not subjected to product to cryo yet.
Anonymous2023-03-27
Bret A.2022-05-13
United States
love the fine tip and the ability to write small on small cryo storage devices
Daniel Linseman2022-02-01
Colorado, United States
These don’t smudge at all - work great for small labels!
Sam2021-07-27
United States
Veselin Stefanov2021-06-10
Bulgaria 
Very good quality
Stephen Perkovic2021-02-04
Nova Scotia, Canada 
Anonymous2020-10-12
New York, United States
Best lab marker I have purchased!
Anonymous2020-09-20
California, United States
Great pens for writing on cryogenic vials!
Cynthia LeVesque2020-04-28
California, United States
These pens are great. The fact that they can write on a wet surface and have a very fine point for small labels makes them super useful.