# Gel pen refill uni Mitsubishi Pencil UM100 red — replacement ink cartridge for gel pens

**URL:** https://aio.lv/en/product--uni-mitsubishi-pencil-unumr5dce--11874835
**Data updated:** 2026-03-09 20:39 (EET)
**Category:** Stationery Accessories
**Manufacturer:** uni mitsubishi pencil
**Manufacturer code:** ^ UNUMR5/DCE
**EAN:** 4902778914649
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-08-13 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--uni-mitsubishi-pencil-unumr5dce--11874835

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.89 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

Replacement gel pen refill uni Mitsubishi Pencil UM100 in red (UN1035). Compatible with compatible gel pen bodies from the brand, this ink cartridge provides red gel ink for writing and note-taking. Suitable for everyday use in office, school, and personal stationery; designed as a direct refill to restore pen functionality without replacing the whole instrument.

## Long description

uni Mitsubishi Pencil UM100 red gel pen refill is a replacement ink cartridge designed to restore gel pens that accept UM100 series refills. It supplies red gel ink suitable for writing, note-taking and everyday office or school tasks. The refill fits compatible pen bodies from the same family and enables continued use of a favorite pen without discarding the instrument.
Advantages
This refill provides smooth gel ink flow and consistent color output for legible red writing. It is engineered to be a direct replacement for UM100-type pen barrels, preserving the original pen balance and grip when installed. The cartridge design reduces downtime by making refilling quick and straightforward, and using a refill instead of replacing the whole pen reduces waste and cost over time.
Suitable for
Everyday writing and note-taking in office and school environments
Annotating documents and marking important passages in red
Replacing spent gel cartridges in compatible pen bodies to extend pen life
Key specifications
Ink type: gel ink
Ink color: red
Compatibility: UM100-series compatible pen barrels
Application: general writing and annotation
Form factor: refill cartridge designed for in-barrel replacement
How to use
Remove the pen cap or unscrew the pen barrel to access the spent cartridge. Pull out the empty refill and insert the UM100 red refill into the same position, ensuring the tip aligns with the pen tip opening. Reassemble the pen and test on a scrap paper to confirm ink flow. Store spare refills capped and upright when possible to preserve ink quality.
Usage recommendations
Use on standard paper and office stationery for best results; avoid prolonged storage in extreme temperatures and keep caps on when not in use to prevent drying. For consistent performance, replace the refill once ink flow diminishes rather than forcing continued writing.

## FAQ

### How much does the uni Mitsubishi Pencil UM100 gel pen refill red cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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 31.07.2026 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 uni mitsubishi pencil 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 uni mitsubishi pencil 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/11874835/67290974_large.webp