Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Pen Ink, Refills & Cartridges |
| Origin | - |
| Brand | Deli |
| Ink Color | Pure Blue, Black, Blue-Black, Light Blue |
| Cartridge Diameter | 3.4mm Universal |
| Target Audience | Elementary School Students (Grade 4+) |
| Special Feature | Quick-Drying Formula |
| Functionality | Posture Correction Aid |
| Erasable | Yes (Specific Erasable Variants) |
| Package Contents | Replaceable Ink Cartridges |
| Usage | Calligraphy Practice and Daily Writing |
| Compatibility | Fits Most Standard Fountain Pens |
Anonymous
Mar 25, 2026
Rating: 5/5
No more stained fingers
The quick-drying claim is accurate. My child used to come home with blue stains on his fingers, but not anymore since switching to these.
Anonymous
Mar 19, 2026
Rating: 5/5
Perfect for my son's homework
These cartridges fit perfectly in my son's school fountain pen. The blue ink is vibrant but not too messy, and it dries quickly so there are no smudges on his left hand.
Anonymous
Mar 19, 2026
Rating: 4/5
Good value for bulk buying
Bought these for our classroom. They work well with standard pens. The quick-drying feature is a lifesaver during timed writing exercises.
Anonymous
Mar 13, 2026
Rating: 5/5
Smooth flow
The ink flows very smoothly without skipping. My daughter finds it easier to control her handwriting with these compared to the previous brand we used.
Anonymous
Mar 11, 2026
Rating: 4/5
Easy to replace
My 4th grader can change these cartridges himself without making a mess. The universal size fits his Deli pen perfectly.
Anonymous
Mar 05, 2026
Rating: 5/5
Great for calligraphy practice
We use these for weekend calligraphy practice. The consistency of the ink helps maintain even strokes, which is great for beginners learning proper posture.
Q: Does this ink clog pens if left unused for a week?
A: Our quick-drying formula is designed to minimize clogging. However, for any fountain pen, it is best to cap it tightly when not in use. If storing for longer periods, flushing the pen is recommended.
Q: Is this safe for a 7-year-old to handle?
A: Yes, these cartridges are designed for elementary students. They are easy to grip and replace. As with any small item, adult supervision is suggested for younger children during the first few changes.
Q: Is the light blue color erasable?
A: Only the specific cartridges labeled as 'Erasable' in the product title have that feature. Please ensure you select the erasable variant if that function is required for your student's needs.
Q: How many cartridges come in one pack?
A: The quantity varies by seller option. Please check the specific package size selected at checkout, as we offer packs ranging from 10 to 50 cartridges.
Q: Are these cartridges compatible with Lamy Safari pens?
A: These are 3.4mm universal cartridges. While they fit many standard European pens, Lamy Safari typically uses a proprietary cartridge shape. We recommend checking your specific pen model compatibility before purchasing.
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