Fisher Space Pen Medium 1.1 mm Refill, Turquoise

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Refill for the Fisher Space Pen SPR9 – PR Pressurized Refill Series

The Fisher Space Pen SPR9 is a refill from the PR (Pressurized Refill) series with a line width of 1.1 mm and turquoise ink. It lasts three times longer than standard refills and provides over 3,600 meters of writing, depending on the surface and usage.

The refill fits all Fisher Space Pen pens, except for the Q4 model. The set includes a white adapter that extends the refill by 2.5 cm and allows it to be used in Parker pens and similar writing instruments.

Magazine Technology and Reliability

The ball is made of tungsten carbide—an extremely hard material that ensures consistent writing performance under all conditions. The ink is thixotropic and is hermetically sealed in a pressurized reservoir.

An internal separator separates the ink from the pressurized nitrogen, ensuring a consistent flow at any writing angle. The refill works even underwater and at extreme temperatures.

Key Benefits

It lasts three times longer than a regular refill
It works underwater, at any angle, and at temperatures ranging from -35°C to +121°C
Tungsten carbide ball for durability and precision
Thixotropic ink in a hermetically sealed pressurized tank
An internal separator separates the ink from the nitrogen
Adapter included for Parker and similar pens
Line thickness: 1.1 mm
Ink color: turquoise
Magazine length: 8.9 cm
Cap length: 2.5 cm
Ink lifespan: over 100 years

Specifications	Value
Brand	Fisher Space Pen
Model	SPR9
Series	PR (Pressurized Refill)
Line thickness	1.1 mm
Ink Color	Turquoise
Magazine Length	8.9 cm
Cap Length	2.5 cm
Ball Material	Tungsten carbide
Ink Type	Thixotropic, under pressure
Temperature range	-35°C to +121°C
Ink Life	Over 3,600 m
Ink Life	Over 100 years
Contents of the Set	Refill and white adapter for Parker

Frequently Asked Questions

What makes the Fisher Space Pen SPR9 refill different from ordinary refills?

The SPR9 refill uses technology featuring a hermetically sealed pressurized reservoir. The ink is thixotropic and is separated from the nitrogen by an internal separator. This design allows for writing underwater, at any angle, and at extreme temperatures. The tip is made of tungsten carbide—one of the hardest materials. Its lifespan is three times longer than that of standard refills, with a single refill capable of writing over 3,600 meters.

At what temperatures does the SPR9 charger operate?

The Fisher Space Pen SPR9 refill is designed to operate at temperatures ranging from -35°C to +121°C. This makes it suitable for use in freezing conditions, extreme heat, and all weather conditions. The pressure in the reservoir ensures a consistent flow of ink regardless of temperature.

For which chemicals is the SPR9 cartridge suitable?

The SPR9 refill fits all pens in the Fisher Space Pen line, with the exception of the Q4 model. The set includes a white adapter that extends the refill by 2.5 cm. Thanks to the adapter, it can also be used in Parker pens, as well as in similar pens of comparable size.

How long does the Fisher Space Pen SPR9 refill last?

The SPR9 refill provides over 3,600 meters of writing. The exact lifespan depends on the surface and writing style. The manufacturer claims that it lasts three times longer than standard refills. The ink has a lifespan of over 100 years, making it an exceptionally durable option for long-term use.

What is thixotropic ink, and why is it important?

Thixotropic ink is a special type of ink that has a higher viscosity when at rest, but when in motion—for example, when writing—it liquefies and flows smoothly. This prevents ink from leaking during storage and ensures clean, even writing. In the SPR9 cartridge, it is hermetically sealed under nitrogen pressure, which further ensures reliable ink flow in any position.

What are the dimensions of the SPR9 magazine?

The barrel is 8.9 cm long, and the cap is 2.5 cm long. The line width when writing is 1.1 mm, which classifies it as a medium size. The included adapter extends the barrel by an additional 2.5 cm for compatibility with Parker pens.

Where can I buy a Fisher Space Pen SPR9 refill with turquoise ink?

The Fisher Space Pen SPR9 refill with turquoise ink is available at the Dulotec.COM online store. There you’ll find original refills from the PR series in various colors and line widths. Ordering is easy, and shipping is fast and reliable.