Left to right: 231, 431, 531, 731, and 831.
Let's take a look at how the ink behaves on fountain pen friendly papers: Rhodia, Tomoe River, and Leuchtturm.
The inks took 20-30 seconds to dry.
Water resistance: Low
Feathering: Low-there was just a little bit of feathering in the flex nib on Rhodia and Leuchtturm.
Show through: Medium
Bleeding: Low-there was some bleeding in the flex nib.
Other properties: 431 and 531 have low sheen and 731 and 831 have medium sheen. 231 and 531 have medium shading, and the rest have low shading.
On Staples 24 lb copy paper there was lots of feathering in the larger nib sizes as well as a bit of bleeding.
The closest ink I have to 231 is Waterman Radiant Pink. 431 is similar to Montblanc Pink. 531 is similar to Monteverde Gratitude. 731 is close to Diamine Scarlet. 831 is similar to KWZ Raspberry. Click here to see the Sailor inks together.
Life Bank paper brings out the undertones, but these 5 are pretty true to tone.
I used a Bond Travel Gear A5 notebook. The inks all had a wetter flow.
Overall, I like all of them, but none of them are so unique that I need a full bottle.
Disclaimer: I purchased this ink at a discount from Sakura Fountain Pen Galley for the purpose of this review. All photos and opinions are my own. This page does not contain affiliate links, and is not sponsored in any way.