Sei-boku (Pigmented)

Ink Review – Sailor Sei-boku - Slightly unnerved

This review details Sailor Sei-boku pigmented ink's excellent flow, lubrication, beautiful shading, and waterproof properties, noting its remarkably blue tone for a blue-black ink despite challenges in cleaning due to pigments.

Ink Review: Sailor Seiboku Pigment Ink - inkyfountainpens

Sailor Seiboku is praised for its attractive dark blue color with shading and occasional red sheen, good flow, crisp lines, and complete waterproofing even under running water, with no clogging observed.

Ink Review #268: Sailor Sei-boku

Sailor Sei-boku nano pigment ink offers depth in color with shades of blue-black and purple sheen, high water resistance, no feathering, and performs well across various papers including in flex nibs.

Ink Review: Sailor Souboku – Page 2 - Fountain Pen Follies

While primarily reviewing Souboku, this page compares it favorably to the older Sailor Sei-boku pigmented ink, noting Sei-boku's fun color but higher maintenance, with tests on flow, drying, and cleanability.

Sailor "sei-Boku": Pigmented Nano Ink Mini Review

This forum mini-review highlights Sailor Sei-boku's complex dye-like blue with significant shading and purple sheen, defying typical pigmented ink patterns while maintaining waterproof qualities.

thINKthursday – Sailor Souboku - Anderson Pens

The review of Sailor Souboku mentions comparisons to Sei-boku, discussing saturation, dry times, and cleaning needs for pigmented inks like Sei-boku in a professional pen blog context.