Tag Archives: #diamineink

Diamine Versus the Sun & a pH Test

By on October 20, 2021
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People often ask what my favorite ink brand is, and, more-and-more it is Diamine. Just like the Beatles, Diamine is based out of Liverpool in the United Kingdom. However, they beat the Beatles to the scene by 100 years in 1864.

In all of my experience with the ink, so far, it has been very fountain pen friendly. I’ve had great success with it in modern and vintage pens, plus, it has a zillion different colors for sale. The only things I don’t mess with are their shimmer inks because shimmer inks clog the daylights out of pens.

Diamine blue inks generally hold up pretty well to the sun’s harsh rays. It is a rare feat among blue inks.

When I stumbled into 14 different ink bottles from a collection I knew it was time to do one of our famous inkfast tests and pH tests.

The results are interesting. Although they lose a bit of their luster, most of the blues are pretty tough and don’t let the sun and UV light bully them. Silver Fox barely fades at all. When still fresh looking, three of my favorite blues in production are Diamine’s “Majestic Blue,” “Blue/Black” and “Blue Velvet.” The only blue to really fade much was “Presidential Blue.”

 

Ancient Copper holds its beauty better than most colors, and it is almost pH neutral!

Breaking into some of the more colorful Diamine inks, the sun proves more aggressive. “Ancient Copper” holds up amazingly well, but  “Red Dragon” takes a hit. “Amazing Amethyst” really takes it  hard and almost completely fades out. The very popular “Oxblood” fairs well, but it still fades a bit.

The pH testing surprised us. As a quick reminder, in the world of pH testing a 0 is extremely acidic, 7 is neutral and 14 is extremely alkali or base. We calibrated the testing device and tested the inks at 24ºC.

Diamine Ink Name              pH  Test  Result
Ancient Copper                                   6.7
Red Dragon                                        2.5
Oxblood                                              2.5
Amazing Amethyst                             6.1
Sherwood Green                                4.4
Blue/Black                                          4.1
Oxford Blue                                        3.8
Presidential Blue                                3.2
Majestic Blue                                     4.2
1864 Blue/Black                                4.5
Silver Fox                                          4.0

Before you throw out any ink you might love, please keep in mind that the pH is only a data point. We don’t know what chemicals are in each ink, and we don’t know how their chemical properties will react to your ink sacs or converters. We’ve seen acidic inks used safely in ink sacs for years and neutral inks destroy ink sacs in a matter of months.

That said, we’ve always had great success with Ancient Copper, which is one of our personal favorite ink colors.

We hope this information is interesting to you…and maybe even help you.

More Ink Tests with Donn

By on May 9, 2019
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Ink-fast testing image

Donn D. shared this new set of ink fast tests he made in 2018. Look how well Cross inks hold up!

Ink Guru Donn D. and I ran into each other again at the Chicago Pen Show a week ago, and I was pleased to see he had some new ink-fast tests to share. This batch is concerned with more fountain pen inks, and I was surprised to find great results with the Cross inks. Who knew? So often happens that Cross gets written off as a boring legacy brand. They make a lot of good ink and surprisingly good pens, in spite of their ubiquity on the scene here in the States.

Much of my conversation with Donn revolved around the fact that ballpoint inks are more susceptible to U.V. light than previously thought. He has found some fade out just as poorly as fountain pen inks. Given ballpoint inks are formulated with oil as a base, this surprised me. As thicker inks, I thought they’d last longer. With any luck, Donn will share those ballpoint ink results with us one day.

In the meantime, enjoy these great tests with fountain pen inks. Click the image to see a bigger version.

Meet the Ink Test Guru

By on October 10, 2018
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Several years ago I met Donn D. at the Chicago Pen Show. We got to talking outside of the main room afterhours, and he was the one who introduced me to Ink-Fast Tests. He had a binder of very organized ink swatches that showed what an ink looked like when protected from the light, what it looked like after it had been left in the sun for 3 months and after it had been left in the sun for 6 months.

As I was on a quest for the perfect replacement blue for my beloved Waterman Florida Blue, I began making ink tests for this site. I figured you would be as curious as I am about how ink holds up to UV light.

Donn and I got together at this year’s Washington DC Pen Show and resumed our inky discussions. I asked if he would be so kind as to share some of his tests on the blog, and he said, “Yes.”

Included in this post are 4 pages of his tests of Pilot ink, Diamine ink, Noodler’s ink, Waterman ink, Parker ink and Pelikan ink…among others.

Donn described his methodology as such: “I exposed fountain pen ink samples to ultraviolet light from the sun for 3 months and 6 months.  The exposure method involved simply taping them to the inside of a patio door, which does not block UV very well.  I exposed all samples in the same manner, but not at the same time, and have no record of the number of cloudy vs. sunny days for each test.  The paper was standard office copy bond.

The inks in this test happen to be colors I like, rather than a general test of a manufacturer’s entire product line.

What surprised me most was how well green inks held up, and a chemist friend speculates a copper compound may be involved.

Note: Test sheet #1 shows 6-month results only.”

Thank you, Donn, for sharing so many of these ink tests. Everybody else, I hope these help you in your quest for the perfect inks.

Click on any of the images to see a larger, clearer representation of the inks tested. Please also note that these are not performance tests of the ink inside a fountain pen. Some of these inks are not as well suited to vintage pens as others. This is strictly to showcase how an ink will hold up to time and light. (For example, Noodler’s Ink often clogs the hell out of vintage pens. Beautiful inks but a pain to deal with unless you love spending hours cleaning pens.)

Ink Fast Test #5: Diamine & ColorVerse

By on July 22, 2018
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I went a little ink crazy at Vanness Pens during the Little Rock Pen Show, back in April. Afterall, they only have the world’s largest selection of ink…and they were kind enough to ply just about all of the vendors and weekend pass holders with free food (including chocolate-covered bacon) and beer. As such, I dove further down the Diamine rabbit hole…and then I won a free bottle of ColorVerse Kepler’s Laws ink in a raffle!

These are before and after samples of Diamine and ColorVerse inks left in the sun for 3 months.

Now it is time to share my experiences with the inks. My all-time favorite blue ink is the old Waterman’s Florida Blue, so I had to try some of Diamine’s Florida Blue. Diamine Florida Blue is a very pale blue that is just a little too deep to be turquoise. I still prefer the much darker Waterman version. I put a test sample in a sunny window, and the UV rays completely erased the Diamine Florida Blue test sample! Definitely not archival quality ink, although it is attractive for artistic writing uses.

Diamine Mediterranean Blue ink is gorgeous when used in a really wet pen. The photo proof sample isn’t as generous of its deeper hues of blue. It could be my replacement for Waterman’s discontinued ink…except it too was completely erased by the sun!

My favorite ink find of the past year or two was Diamine’s Ancient Copper. When I saw the Diamine Autumn Oak at the shop, it looks about a shade lighter in a rich orangy brown. It is a beautiful ink when fresh. Annnnd, luckily it holds up a little better than Diamine blues in 3 months of sunlight.

Of the four inks, ColorVerse’s Kepler’s Laws held up best to the sun. It is a rich red color with purple hues and a little shimmer when fresh. (I don’t see the shimmer, but all of my pen pals insist that they see it.) It writes better than I thought it would. I was really worried it would clog up my pen, but I didn’t have that experience in a Delta Fusion A2 I have with a stub nib. After 3 months in the sun, the more vibrant red aspects vanished, but a slightly watery merlot color remained strong.

And for those who are curious about the black header ink, it is the already tested and proven Aurora black. A bad-ass ink that never quits.