Frequently Asked Questions: NiGK UV-M UV Indicator Paper (Irreversibility, 18 mm, 100 pcs):

1. What is the NiGK UV-M indicator paper?

NiGK UV-M is a single-use, self-adhesive paper disc that changes color irreversibly when exposed to ultraviolet light. It provides a visual record of UV dose without requiring instruments or power sources.

2. What does irreversibility mean?

Irreversibility means once the paper turns pink under UV exposure, it cannot revert to its original white color. This permanent color change serves as an unalterable evidence of UV irradiation.

3. What are the product specifications?

4. What is the sensitivity and measurement range?

UV-M is calibrated to change color permanently at around 5.5 J/cm² of UV energy. It’s suitable for monitoring medium-level UV cures and germicidal applications where verification of a minimum dose is critical.

5. What are the main applications?

Verifying UV dose in surface sterilization and disinfection

Monitoring UV curing processes for inks, coatings, and adhesives

Simulating accelerated weathering tests under UV lamps

Checking uniformity of UV LED arrays in manufacturing lines

6. How do I use the UV-M paper correctly?

Peel a disc from its backing and place it on a flat surface or directly on the object.

Expose the disc to the UV source at the recommended distance and duration.

Observe the color shift from white to pink.

Compare against a reference swatch or color scale to confirm the dose.

7. How do I interpret the color change?

Light pink indicates exposure near the threshold dose.

Medium to deep pink shows exposure above the threshold.

No change means the UV dose was below the sensitivity point.

8. How should I store the indicator paper and what is its shelf life?

Store unused packs in a cool, dark, and dry environment. Avoid direct sunlight and humid areas. Use within 12 months of the manufacture date stamped on the foil pouch for reliable performance.

9. Can the paper be reused?

No. UV-M is designed for one-time use. Once it changes color, it cannot revert or be recalibrated.

10. What packaging details should I know?

Each foil pouch contains 100 discs, individually die-cut and mounted on release liner. The pouch is light-proof to prevent premature exposure.

11. What safety precautions should I take?

Wear UV protective eyewear and gloves when handling UV sources.

Avoid direct skin exposure to UV lamps.

Do not ingest or apply the paper to skin.

12. Where can I purchase the UV-M indicator paper?

Please contact QTE Technologies (qtetech.com/en) for best price.

QTE Technologies is a proud global MRO provider, serving customers in over 180 countries and always striving to ensure a complete and satisfying customer experience. Established in 2010, we supply over 1 million products for every industry and technology. Additionally, you can reach us anytime via 24×7 chat support, phone, WhatsApp or email. Discover what our valued customers have to say about our services on our dedicated review page.

UV-LED-1 and UV-LED-2 labels optimized for LED-based UV sources

UV-H for high-sensitivity applications

UV-L for low-dose monitoring

14. How do I obtain technical support or documentation?

Visit the NiGK website’s UV indicator section to download datasheets, application guides, and color comparison charts. For custom inquiries, use the Contact Us form to reach NiGK’s technical team/ or contact QTE Technologies (qtetech.com/en)