Prusament PETG Ultraglow Green 800g (NFC)

Prusament PETG Ultraglow green is the brightest glow-in-the-dark filament on the market. It is filled with the highest possible amount of strontium aluminate, which is a safe alternative to previously used Phosphorus. We used the maximum we could achieve while maintaining reliable printability and delivering exceptionally bright luminescence. We felt like there was no strong reason to make another mediocre glow-in-the-dark PLA filament, as the market already has plenty. Instead, we did what we do best: we took it up to eleven.

Glows all night long

Visible glow after 6-8 hours

Prusament PETG Ultraglow can be charged by exposing it to both UV (most effective) and visible light sources. When charged, the filament glows strongly for several minutes, then the glow intensity gradually decreases. In total darkness, a weak glow can be visible even after 6-8 hours after charging.

Brightest of them all

Filled with glowing powder to the maximum

We ordered other branded glowing filaments and put them all to the test. We've kept the other brands anonymous, as the results speak for themselves. Prusament PETG Ultraglow shines by far the brightest when compared to common glow-in-the-dark PLA.

Bonded in Prusament PETG

For better mechanical and temperature resistance

We deliberately chose PETG as the base polymer for a reason: it's stronger than commonly used PLA and resists higher temperatures, making it suitable for functional parts. And you can take it further with the XL and other multimaterial solutions. Print functional models in standard PETG and add glowing accents to highlight specific components - switches, handles, indicators, or any part that needs visibility in low light.

Printing Setup

Basic Attributes

New spools equipped with OpenPrintTag

Prusament filaments are wound on a redesigned spool that introduces several improvements for an even better printing experience, starting in October 2025. The new spool features a simple locking mechanism that makes disassembly quick and easy, allowing effortless refills. It also stays secure during filament drying, even at higher temperatures. And with its slimmer dimensions, the spool ensures compatibility with a wide range of multi-color and multi-material printing systems.

What can you expect?

Prusament PETG Ultraglow is our own in-house made filament. The whole manufacturing process is closely monitored and tested - we guarantee ±0.04mm precision and highly-consistent colors. You can inspect parameters of every spool we made at prusament.com. Check the sample spool!