--- product_id: 60642702 title: "Blacklight Reactive Invisible Blue Ink Industrial UV Marker" brand: "opticz" price: "€ 21.00" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.pt/products/60642702-blacklight-reactive-invisible-blue-ink-industrial-uv-marker store_origin: PT region: Portugal --- # Water-resistant & fast drying Bright blue UV fluorescence Precision spring-loaded medium nib Blacklight Reactive Invisible Blue Ink Industrial UV Marker **Brand:** opticz **Price:** € 21.00 **Availability:** ✅ In Stock ## Summary > 🔦 Mark the unseen, own the night. ## Quick Answers - **What is this?** Blacklight Reactive Invisible Blue Ink Industrial UV Marker by opticz - **How much does it cost?** € 21.00 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/60642702-blacklight-reactive-invisible-blue-ink-industrial-uv-marker) ## Best For - opticz enthusiasts ## Why This Product - Trusted opticz brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Durable Design:** Handmade solid aluminum alloy body combines style with ruggedness, built to withstand demanding work environments. - • **Invisible Security Glow:** Ink remains completely invisible in daylight, revealing a vibrant blue glow only under UV blacklight—perfect for covert marking and authentication. - • **Industrial-Grade Durability:** Solvent-based, water-resistant ink that dries in under 30 seconds and resists smudging or removal on porous surfaces. - • **Versatile Surface Compatibility:** Works seamlessly on aluminum, cardboard, ABS, acrylic, rubber, nylon, and many textured materials—ideal for diverse industrial applications. - • **Precision Control for Professional Marking:** Spring-loaded medium point nib ensures consistent ink flow and sharp, clear markings every time. ## Overview The Opticz Blacklight Reactive Invisible Blue Ink Industrial UV Marker is a premium solvent-based marker designed for industrial use on porous surfaces. It delivers fast-drying, water-resistant, and non-transferable invisible ink that fluoresces bright blue under long-wave UV blacklight. Featuring a precision spring-loaded medium nib and a durable aluminum body, this marker is perfect for secure, covert marking on materials like aluminum, cardboard, acrylic, and more. ## Description This is that hard to find UV Blacklight Reactive Invisible Ink for box marking, document marking, and other unique security applications. Only visible under black light. Ink is water resistant and very difficult to remove. Best viewed in dark or shaded area. Opticz Blacklight Reactive Invisible Industrial Inks are suitable for paper marking as well as other materials with a porous textured surface. This ink is invisible, colorless fast drying and will glow bright blue under UV blacklight. This ink should NOT be used for readmission (e.g. on skin use). Industrial application only. Can be used on: aluminum, cardboard, ABS, acrylic, rubber, cellulose, acetate, formica, nylon, polystyrene, Polyethylene and most other materials with porous surfaces. Each high quality solid aluminum marker is filled with 15ml of our special blend UV ink. Ink is alcohol solvent based so a little goes a very long way! Ink is formulated to fluoresce brightly under long wave ultraviolet light only. They do NOT glow in the dark without the use of an ultraviolet blacklight. Fast drying and non-transferable. Ideal for applying onto an already printed surface. Avoid eye contact and excessive inhalation. Do not ingest. KEEP OUT OF THE REACH OF CHILDREN. ## Features - Solvent based ink for industrial application only. Not for use on skin. A precision spring loaded medium point nib controls the flow of ink. - Can be used on: Aluminum, cardboard, ABS, Acrylic, Rubber, Cellulose, Acetate, Formica, Nylon, Polystyrene, Polyethylene and most other materials with a porous textured surface. Please note this ink blend will not adhere well to smooth glossy hard surfaces. - Ink is water resistant and very difficult to remove. Best viewed in dark or shaded area. This ink is invisible, colorless, fast drying and will glow bright blue under UV blacklight. - Ink is formulated to fluoresce brightly under long wave ultraviolet light only. It will not glow in the dark without the use of an ultraviolet blacklight. - Dries in 30 seconds or less after application and is non-transferable. Ideal for applying onto an already printed surface. Avoid eye contact and excessive inhalation. Do not ingest. ## Technical Specifications | Specification | Value | |---------------|-------| | Additional Features | Glows bright blue in uv blacklight, Hand made with solid aluminum alloy construction, Invisible in normal lighting | | Age Range Description | 12+ | | Asin | B07BPWF7PF | | Best Sellers Rank | #80,969 in Office Products (See Top 100 in Office Products) #667 in Permanent Markers & Marker Pens | | Body Shape | Cylindrical | | Brand Name | Opticz | | Color | blue | | Customer Reviews | 4.2 4.2 out of 5 stars (132) 4.2 out of 5 stars | | Hand Orientation | Ambidextrous | | Ink Base | Alcohol | | Ink Color | Blue | | Is Waterproof | true | | Item Dimensions | 5.5 x 0.6 x 0.6 inches | | Line Size | 0.7mm | | Manufacturer | DirectGlow LLC | | Manufacturer Part Number | SPIUVM | | Marker Type | Permanent Marker | | Material Type | Aluminum | | Model Number | SPIUVM | | Number Of Items | 1 | | Number Of Pieces | 1 | | Pattern | Solid | | Point Type | Medium | | Recommended Uses For Product | Dark | | Style | Unique | | Surface Recommendation | Adheres best to a textured surface | | Target Audience | Adult, Youth | | Unit Count | 1.0 Count | | Upc | 744271607345 | | Water Resistance Level | Water Resistant | | Writing Instrument Form | Marker Pen | ## Product Details - **Brand:** Opticz - **Ink Color:** Blue - **Number of Items:** 1 - **Point Type:** Medium - **Recommended Uses For Product:** Dark ## Images ![Blacklight Reactive Invisible Blue Ink Industrial UV Marker - Image 1](https://m.media-amazon.com/images/I/51ru6VJF0eL.jpg) ## Questions & Answers **Q: will this stay permanently (wash after wash with bleach) on a duvet insert? i ask so we can mark white king and queen duvets for quick laundry at a h** A: Can’t say about bleach and cloth but it stays on floor that have been repeatedly washed with cleaning solution. **Q: Will this product work on vinyl?** A: Vinyl is no problem. **Q: this a plunger tip like a paint pen, or is it a a fixed wick tip?** A: It is a plunger tip...the ink is really thin and tends to bleed so if you are writing something small or very detailed (like words) practice on something else before you apply it to your final product. We used it for letters in our escape room and they smudged so much the first try that we had to wash the wall and repaint the area then use the UV pen again over it very carefully. On paper it bleeds a LOT so it may take several tries if you are doing a very detailed area **Q: Does the ink blend contain any volatile organic compounds? Please supply any vapor pressure, boiling point, and/or outgassing information.** A: It’s an isopropyl alcohol base. Please send PM for SDS attachment. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by on Reviewed in the United States August 25, 2024* Works great, can't see a think unless under black light, easy to use ### ⭐⭐⭐⭐⭐ It Works and stays on *by on Reviewed in the United States August 19, 2022* I used this on metal surface and it applied and stayed on very well. Worth the money. ### ⭐⭐⭐⭐⭐ Great Loss Prevention Tool *by on Reviewed in the United States September 23, 2022* This item enables us to covertly ensure a client who is claiming to have received unusable product too frequently is actually being honest and not defrauding us or our supplier ## Frequently Bought Together - Opticz Blacklight Reactive Invisible Blue Ink Industrial UV Marker - COSOOS 2 Pack UV Flashlight, 12 LED Handheld Blacklight Flashlight 395nm Mini Light Torch Detector for Dog Pet Urine Stains, Bed Bugs and Scorpions. (Batteries not Included) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/60642702-blacklight-reactive-invisible-blue-ink-industrial-uv-marker](https://www.desertcart.pt/products/60642702-blacklight-reactive-invisible-blue-ink-industrial-uv-marker) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-24*