Blue Black Ink, 60ml Bottle Ink

Blue black ink by Platinum is a famous product with a long history. It has been produced using traditional manufacturing method ever since.

Blue black ink is blue at first when written and turns black over the years. It can be said that deep dark blue colour is obtained with this ink. The ink is not affected due to sunlight or humidity, and it has high water resistance, which makes it ideal for permanent records.

What is Blue Black Ink?

Initially, it had a unique feature and was initially released as an ink for long-term storage for official documents, but has been discontinued by major manufacturers.
The origin of this ink dates back to the 2nd century, and its widespread use was in the 12th century. Initially, it was made from nuts and sap, and in the 16th and 17th centuries it was used in wine and beer as a fungicide. 

The current ink was established in the 19th century.

The manufacturing method uses an oxidizing effect that ferrous ions turn into ferric ions to form the color black. Thus, it is not an ink that mixes blue and black inks, and a dye or acid is added.

Hence, the blue black ink is not “bluish black” or “blackish blue”, but it is blue at the beginning of writing, but the blue colour of the dye changes over time into black due to its scientific effects, and makes it suitable to maintain long-term records. Only the black part of the iron that has been mixed remains on the paper’s surface and becomes black.

- Type: Fountain pen bottle ink

- Volume: 60ml

- Ink: Water-based dye ink (acidic)

- Size: W57 x D57 x H63mm

- Standard weight: 180g