--- product_id: 11862341 title: "USA Ink with ITF Technology, 90 ml Black Ash (G308BK)" brand: "monteverde" price: "฿2523" currency: THB in_stock: true reviews_count: 13 url: https://www.desertcart.co.th/products/11862341-usa-ink-with-itf-technology-90-ml-black-ash-g308bk store_origin: TH region: Thailand --- # patented formula ITF technology 90ml capacity USA Ink with ITF Technology, 90 ml Black Ash (G308BK) **Brand:** monteverde **Price:** ฿2523 **Availability:** ✅ In Stock ## Summary > 🖊️ Write Your Legacy with Monteverde Ink! ## Quick Answers - **What is this?** USA Ink with ITF Technology, 90 ml Black Ash (G308BK) by monteverde - **How much does it cost?** ฿2523 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/11862341-usa-ink-with-itf-technology-90-ml-black-ash-g308bk) ## Best For - monteverde enthusiasts ## Why This Product - Trusted monteverde brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Generous Size:** 90ml bottle—one of the largest in the industry, perfect for the avid writer. - • **Versatile Use:** Ideal for fountain pens, calligraphy, and art projects—let your imagination run wild! - • **Innovative Formula:** Ink Treatment Formula enhances flow and reduces clogging for a seamless experience. - • **Eco-Friendly Choice:** Crafted with sustainability in mind, making it a responsible choice for conscious consumers. - • **Unleash Your Creativity:** Experience the only ink with patented ITF technology for smoother writing. ## Overview Monteverde USA Ink with ITF Technology is a revolutionary ink solution featuring a patented Ink Treatment Formula (ITF) that enhances writing performance. The 90ml bottle is designed for those who demand quality and quantity, making it a top choice for professionals and creatives alike. ## Description Monteverde USA Ink with ITF Technology, 90 ml Black Ash (G308BK) ## Features - This incredible ink by Monteverde has a special Ink Treatment Formula (ITF). It's the only ink in the world with this patented ITF technology. - The 90mL bottle is one of the largest desk top ink bottles in the industry! ## Images ![USA Ink with ITF Technology, 90 ml Black Ash (G308BK) - Image 1](https://m.media-amazon.com/images/I/81qhhkgUn5L.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Yummy, lubricated, wet, beautiful blue, permanent fountain pen ink. *by C***I on Reviewed in the United States on May 6, 2023* This brand ink has never let me down and quickly became my favorite after buying "California Teal".This bottle of ink is not only lubricated to keep my pen working each and every time, but is also permanent, making it suitable for watercolor illustration, writing, and so much more. It works on cheap paper as well as fountain pen papers. ### ⭐⭐⭐⭐⭐ Excellent value, nice color, flows well, doesn't dry too quickly, stains hands more than Montblanc. *by C***R on Reviewed in the United States on February 16, 2023* Excellent value for the money, getting 90ml for $15 vs Montblanc 60ml for $28. Monteverde has a much wider color selection and multiple size bottles so I can buy the smaller size first to try an ink and not spend the money on a large bottle that I may not want to keep. No fountain pen ink is waterproof unless specifically stated so this will run if you get it wet. Pretty good color opacity so you don't need a very wet pen to produce a dark line. It flows well through both my very expensive pens and Jinhao "cheap" (but still surprisingly good) pens. It dries a little faster than Montblanc ink but still doesn't dry in my nib for quite a while even if I leave my pen uncapped. It stains my hands noticeable more than Montblanc ink does so be careful or use gloves to prevent staining your fingers when refilling ink or changing nibs. I think Monteverde is the best all-around pen ink because they have a huge color selection and the price is very reasonable. A 90ml bottle of Monteverde ink costs the same as a 30ml bottle of Noodler's ink even though both seem to write equally well and look equally good with all my fountain pens. ### ⭐⭐⭐⭐⭐ Smooth writing ink with vibrant colors *by T***O on Reviewed in the United States on March 8, 2019* Monteverde California Teal is everything I enjoy about fountain pen inks. Its good flow combined with its ability to produce vibrant color variations makes for an expressive writing experience. The only problem came from the bottle itself. When the ink dries on the treading the cap becomes very difficult to remove. So you might want to wipe down the threads after inking and before closing.In the box:1 -boxed fountain pen ink bottle 3oz (90ml)Introduction:Monteverde California Teal is a dark greenish teal ink for use in fountain pens. The ink is made by Monteverde Ink in E.U. and packaged in USA as stated on the package. Monteverde California Teal ink features ink treatment formula (ITF) which is said to help with ink flow and pen lubrication.Ink Properties: Features Monteverde ITF Technology which Monteverde says:-improves ink flow-lubricates and protects ink feeding system from clogging and corrosion-extends cap off time before ink starts to dry-improved dry time when applied to paperColor:California Teal is a medium saturated ink that can vary from a dark green coloring to light teal when diluted. The ink also dries as a bright reddish sheen in spots where it has pooled and concentrated.Pelikan 4001 Dark Green Ink is very similar to Monteverde California Teal in color but California Teal has more sheen and a hint more teal undertones. Looking at the color swatches (see photo) California Teal clearly favors the green side of the spectrum.Performance:Monteverde California Teal is a pleasure to use. It has a wonderful ease of flow while still behaving on the paper. It reminds me of Pilot’s Iroshizuku Kon-Peki ink in terms of how it performs. The medium color saturation is rich and vibrant without being too dark. It produces beautiful shading when used with the correct combination of nib and paper quality. If you look closely at the writing sample (see photos) hints of sheen are visible.I found the dry time to be good to average. The increased ink flow will naturally increase dry times in any pen but using a fine nib with average flow I had no issues. Once dry the ink will run if exposed to water. If you’re using it for important notes you make want to consider a more water resistant ink.For sketching the ink provides a smooth and continuous flow. The strokes are quick and immediate. Applying water with a brush allows the color run and blend.Cleaning:I found California Teal to be an easy ink to clean. Flushing out of my Wing Sung 601(pen) with water removed most of the ink. The pen being transparent I could see that some ink remained in between threading and in the tight gaps along the nib. I took the nib unit apart and after a quick rinse with water all ink was removed.Conclusion:Monteverde California Teal really surprised me with how well it flowed while still behaving itself on paper. It is a high quality ink that produces bright vivid greens and teals with a touch of bling thanks to a healthy dose of reddish sheen. This ink opened my eyes about Monteverde Inks and I would be glad to try other colors in their product line.Pros:-good controlled flow-easy cleaning-produces beautiful shading and red sheen (depends on paper and nib)-Big bottle at a good priceCons:-Color name is misleading.-bottle cap can be difficult to remove if ink dries on threads-not water resistant so be careful with important documents.Pens Used In Photos-TWSBI 580 Pen Used in sketch-TWSBI ECO Medium used in writing sample-Wing Sung 601 used in writing sample ## Frequently Bought Together - Monteverde Ink Bottle, Black - Waterman 50 ml Bottled Liquid Fountain Pen Ink, Serenity Blue (S0110720) - Lamy Plastic Fits safari, vistaS afari Converter Z24, Red --- ## 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.co.th/products/11862341-usa-ink-with-itf-technology-90-ml-black-ash-g308bk](https://www.desertcart.co.th/products/11862341-usa-ink-with-itf-technology-90-ml-black-ash-g308bk) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-30*