Uni-ball Signo Broad UM-153 Gel Ink Pen - White Ink - 10 Pen Set

I am a cancer screening lab tech who uses these pens to mark abnormal cells on glass microscope slides. My profession has been looking for a white pen that writes well on glass and fits under the objective lens of the microscope for thirty years. Finally! A pen that does the job. These are great! They mark precisely where we want and flow well. The lines show up nicely on the background of the black microscope stage. Don't ever stop making these or I'll have to retire...

Received my first order of Signo white ink gel pens from JetPens a week ago.
They are excellent! They are comfortable to use, and the ink flow is smooth and
bright white. I am back for more!

J. from Michigan

The best white ink gel pen I have ever used! I never thought I would find another white gel pen ever again. You certainly can't buy these things from your local office supply store. Thank god for Jet Pens! I thought I was going to have to start using another medium for my crafting. The ink is smooth and totally opaque. You can mix it with other colors to get the desired effect. Jet Pens has me as a customer for life!

I have purchased these pens in the past and thought they were made in the states, there was no Japanese writing on them. The pen I purchased was a disappointment in general but it was the best I could find in white. My husband went to your site and ordered the box set for me. It may be my imagination, but these pens write better. In fact, they are the whitest pens on the market. In addition, they seem to have more ink then their counterpart. They're astonishing. I just ordered my second box. I won't use any other. Neena.