A Test Of Four

While viewing blog Toying with Light, where Ruby did a short review on 8 blue gel pens, I got the idea to do the same thing with the 4 black ink 0.5mm RT gel pens that I have. I shamelessly copied her technique as I thought it a good one for a short quick test. I only hope that she is more honored that I copied her than she is miffed at me. We are members of the same pen forum so maybe she will forgive me.

Anyway... The 4 gel pens I used for this test were the four that I had on hand: The Mistubishi uni-ball Signo 207 Micro (top); the Pilot G-2 Extra Fine 05(second from top); the Pilot Precise V5 RT (third from top) and the Pilot V Ball RT Extra Fine (bottom). The V5 has a needle point with the other 3 having conical points. All the pens are supposed to be 0.5mm pens. But since different manufacturers label their pen nibs differently it's hard to tell just what size the balls in the points really are. The Signo 207 Micro is touted as having a 0.5mm ball but that it writes a 0.38mm line. I have read that to determine the size of line a particular size ball should make is to divide the diameter of the ball by 2. If that is the case then all four pens should make a 0.25mm line! But we already know that's not true in this case just by looking at the pic, not all the pens produced the same size lines. More on that later.

The paper that I used was common notebook paper 0.003" (0.076mm) thick. There was 1/4 of a loose leaf package under the top page. I wrote the first half of the holoalphabetic sentence, "The quick brown fox jumps over the lazy dog", followed by a short line then a dot. The dot was where I held the pen in place for 10 seconds with moderate pressure. After the ink had dried for a minute I used a drop of water on the end of my finger and placed it on the line. I did not attempt to smudge the line, I simply let the water do it's thing. After the water had dried up I began to examine the results of my test.

Though my aging eyes are just that, aging, I do wear corrective lenses (called glasses) and when I have to see something up close I add on a pair of reading glasses. with the reading glasses on I made the following observations: The finest line width was the Pilot G-2, followed by the Signo 207, then the Pilot V Ball and finally the Pilot Precise V5. I must say that I was a little surprised by the results that I got. I expected that the 207 would have produced the finest line not the G-2. And I expected the V5 to have produced a finer line than the V Ball. So much for preconceptions. The 207 has the lightest ink of the four with the Pilots all having the same shade. This was no surprise at all as I had noticed this before.

The results of the dot test was that all four pens bled through the first layer of paper onto the next. The G-2's bleed through was barely noticeable though while the 207's was a bit more so though their respective spots on the top sheet were about the same size. The V Ball's was 3 times that of the G-2 and the V5's 4 times as great. Both of the latter bled through to the third page. While the ink in the 207 is pigmented (meaning it penetrates the papers fibers instead of staining them) I was only able to find out that the Pilot's ink was "water resistant and smudge proof". Which brings us to the third part of the test, the water drop test.

With a single drop of water placed on each of the 4 lines the results are obvious. The Signo ink was the only one not to bleed through the paper and feather out. This leads me to believe that the Pilot ink is dye ink, not pigmented. Though all four pens passed the smudge teat, a test that I performed by drawing a line with one pen at a time then immediately rubbing my finger across it. The result was unanimous: all 4 inks did bot smudge. I half expected the Pilot inks to smudge in I did not think that they dried as quickly as the Signo ink. Again, so much for preconceptions.

The V5 wrote the smoothest of all four, not surprising as it was the broadest, with the other three tying for 2nd place. All four have thin rubber grip sleeves over the plastic barrels which offers a non-slip grip without being squishy, which is something I like in a rubber grip, firmness. All four pens are about the same length, the differences being to small to mention. All are attractive pens: the Signo with its stylish chrome and black pocket clip and chrome end cap; the G-2 with it's clear and black body; TheV5 with it's silver, chrome and black body and the V Ball with it's chrome, white and black body would all make stylish accessories on a desk top.