# Refill for gel pen Donau — waterproof blue ink, compatible cartridge

**URL:** https://aio.lv/en/product--donau-7345910pl-10--11874921
**Data updated:** 2026-03-09 20:39 (EET)
**Category:** Stationery Accessories
**Manufacturer:** Donau
**Manufacturer code:** ^ 7345910PL-10
**EAN:** 10014714
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--donau-7345910pl-10--11874921

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Gel pen refill by Donau with waterproof blue ink designed as a replacement cartridge for compatible gel pens. Provides smudge-resistant, water-resistant writing for documents, notes and forms. Suitable for everyday office, school and archival use where legible, durable blue ink is required. Easy to install and intended for reliable, consistent ink flow.

## Long description

Refill for gel pen Donau — waterproof blue ink, compatible cartridge is a spare gel ink cartridge designed to restore or extend the life of compatible Donau-style gel pens. The refill contains waterproof blue ink formulated to dry quickly and resist smudging and water exposure, providing reliable, legible results on documents, forms and everyday notes. Its compact construction and standardized shape make it suitable for a variety of refillable gel pen models that accept this cartridge type.
Advantages
This Donau refill offers water-resistant blue gel ink that dries rapidly to reduce smearing and maintain clear, readable text. The cartridge is built for consistent ink flow to minimize skipping and interruptions while writing. Installation is straightforward, allowing quick replacement without special tools, and the refill is compatible with many common refillable gel pen housings used in offices and schools.
Suitable for
Writing and signing documents where water-resistance is required
Daily note-taking in office and educational settings
Archival or record-keeping tasks that need legible, durable blue ink
Replacing spent gel cartridges in compatible refillable pens
Key specifications
Ink colour: blue
Ink type: gel, water-resistant
Finish: quick-drying, smudge-resistant
Compatibility: compatible with refillable gel pens accepting this cartridge style
Typical use: document writing, note-taking, signatures
How to use
To replace the cartridge, remove the pen housing cap or unscrew the pen body according to your pen’s design, extract the spent refill and insert the Donau gel refill until it seats securely. Reassemble the pen and test the tip on scrap paper to ensure steady ink flow. Store unused refills capped and upright in a cool, dry place to maintain ink quality.
Usage recommendations
For best results, use the refill on standard paper types and allow a moment to dry before stacking or filing documents. If ink flow is intermittent after installation, gently advance the refill tip with a few strokes on scrap paper. Keep refills away from extreme heat and direct sunlight to preserve ink performance.

## FAQ

### How much does the Donau gel pen refill — waterproof blue cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Donau products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Donau service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11874921/67291083_large.webp