Ink Review: Deep Dark Blue by Cult Pens (Diamine)

An overview of the inks within this review series is available here. Everyone can use a good, dark, professional looking, navy blue ink. There is no situation where its use would be out of place. If you don't have one in your arsenal yet, this one deserves your consideration.

Where To Buy (No Affiliate Links)

Cult Pens
80 ml 30 ml
Price / Bottle £5.90 (£4.92 ex VAT) £2.35 (£1.96 ex VAT)
Price / ml £0.07 (£0.06 ex VAT) £0.08 (£0.07 ex VAT)
Writing Sample on Rhodia 80 gsm

Writing Sample on Rhodia 80 gsm

Writing Sample on 20lb copy paper

Writing Sample on 20lb copy paper

Back of 20lb copy paper

Back of 20lb copy paper

Writing Sample on Field Notes - Front and Back shown

Writing Sample on Field Notes - Front and Back shown

Ink Properties

Shading: No, just a solid blue.
Bleed Through: I would consider the back side of Field Notes to be unusable. Copy paper experiences minor bleed through.
Show Through: Absorbent papers exhibit show through and since this is a very dark colour, this show through may be distracting to some users.
Saturation: Highly saturated.
Sheen: None.
Water Resistance: No useful water resistance.
Drying Time: A little longer than average, 25 seconds using an EF nib on Rhodia.
Flow: Average flow. Average lubrication. 
Cleaning: Average.

Colour Make Up

Chromatography Sample

Chromatography Sample

The trace is lead with a narrow band of turquoise followed by admiral blue. Grey can be seen where the sample was applied to the wicking media.

Similar Inks (Images Courtesy of Goulet Pens and Cult Pens)

While I have shown similar inks above, please note that the colour swatches are from different sources and may not have received the same level of colour correction.

Conclusions

I like this colour a lot, it is a good dark blue that is available at a good price. I think that Sailor Sei-Boku has better behaviour characteristics but it is four times the price! If you are going to go to the trouble to order any of the inks in this series, you should add this one to your cart too.

Other Reviews For This Ink

The Pen Addict 
Informal Scribble