is the jet black waterproof?

It's not to much waterproof. On the jet pens page you can see the behavior of each color and each brand of ink. Greetings

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Fountain Pen Ink 30 ml - Base Colour - 6 x Bottles - Sepia, Green Black, Earl Grey, Ancient Copper, Twilight, Jet Black

Product ID: 237118063

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Details

Brand
Diamine
Item Volume
30 Milliliters
Manufacturer
Diamine
Package Information
Bottle
Paint Type
Ebony

⚡quick drying formula

🌿natural, non-toxic dyes

🖋️30ml premium ink bottles

Description

🖋️ Elevate your pen game—because your words deserve to stand out.

UNIVERSAL COMPATIBILITY - Perfectly engineered for all fountain pen brands—no compromises.
VIBRANT SIX COLOR PALETTE - From Sepia to Twilight, express your unique style with every stroke.
ECO CONSCIOUS CRAFTSMANSHIP - Made with natural, pH-neutral dyes that are safe and sustainable.
BEGINNER FRIENDLY CALLIGRAPHY - Ideal for mastering calligraphy with rich, consistent colors that inspire creativity.
EFFORTLESS FLOW FAST DRYING - Smooth, fluid ink that dries quickly to keep your writing sharp and smudge-free.

Diamine Fountain Pen Ink offers a curated set of six 30ml bottles featuring rich, quick-drying, and non-toxic inks made from natural dyes. Compatible with all fountain pens and perfect for both beginners and pros, this collection blends heritage craftsmanship with modern performance to bring your writing and calligraphy to life.

Specifications

ASIN	B08LGPTNTT
Best Sellers Rank	#128,927 in Office Products ( See Top 100 in Office Products ) #170 in Bottled Pen Ink
Brand	Diamine
Color	Sepia, Green Black, Earl Grey, Ancient Copper, Twilight, Jet Black
Date First Available	October 20, 2020
Ink Color	Green Black
Item Weight	8.8 ounces
Item model number	216/274/306/271/296/201
Manufacturer	Diamine
Manufacturer Part Number	216/274/306/271/296/201
Material Type	Plastic
Number of Items	1
Package Dimensions	5.67 x 3.7 x 1.18 inches
Size	1 fl oz

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€ 94.12

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