# ovalware Airtight Cold Brew Iced Coffee Maker and Tea Infuser with Spout - 1.0L / 34oz RJ3 Brewing Glass Carafe with Removable Stainless Steel Filter

Source: https://www.ranked10.co.uk/kitchen/best-cold-brew-coffee-maker/ovalware-rj3-cold-brew-maker
Ranked #5 in "Best Cold Brew Coffee Maker 2026: Ten Ranked on Real Litres, Not kg": https://www.ranked10.co.uk/kitchen/best-cold-brew-coffee-maker

- Price: £44.93 (checked on Amazon UK on 2026-09-07)
- Amazon rating: 4.5 from 12,733 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B01CTIYU60?tag=ranked10-21

The ovalware RJ3 is our number five cold brew maker pick for September 2026 and the premium compact glass brewer in this guide. Its 1.0 litre carafe is extra-thick borosilicate glass, the removable filter is an 18/8 dual mesh design and the airtight silicone seal keeps concentrate fresh for up to two weeks. The listing records 12,733 ratings at 4.5.

Honesty note: the capacity spec prints 964 g where a litre figure belongs, flagged as listed. Everything on this page comes from the Amazon listing rather than our own testing.

## Specification

| Field | Value |
|---|---|
| Capacity | 1.0 L / 34 oz (spec field says 964 g, as listed) |
| Glass | Extra-thick, lab-tested borosilicate |
| Filter | 18/8 superfine dual mesh, medical-grade stainless steel |
| Seal | Airtight, BPA-free silicone |
| Weight | 454 g |
| Dishwasher Safe | Yes |
| Brews | Cold brew coffee and hot or iced loose leaf tea |
| ASIN | B01CTIYU60 |

## Questions people ask

**How much coffee does it make?**

A 1.0 litre / 34 oz carafe of cold brew concentrate.

**What is the filter like?**

An 18/8 superfine dual mesh removable filter and cap.

**How long does it stay fresh?**

The airtight seal keeps flavour locked in for up to two weeks per the listing.

**Can I brew tea in it?**

Yes, the listing says it is great for loose-leaf tea, brewed hot or cold.

**Is it dishwasher safe?**

Yes.

**Why does the spec say 964 g?**

That is a unit error on the spec sheet; the carafe holds 1 litre.