Ratio Eight (Series 2)
A premium automatic pour-over with a plastic-free HOT water path (hand-blown glass lines, steel) - but the cold reservoir is still a BPA-free plastic tank, so it's much better than a normal drip machine, not fully plastic-free.
The verdict: Minimal plastic contact
This is the nuance worth getting right. From the moment water is heated, the path is plastic-free: hand-blown borosilicate glass water lines, a stainless steel shower screen and filter basket, and a borosilicate glass carafe, with food-grade silicone seals. But the cold water reservoir is a BPA-free polymer (plastic) tank with a reinforced metal structure - so cold water does sit in plastic before brewing. That makes it minimal-contact: dramatically less plastic contact than a standard drip machine (where hot water runs through plastic), but not the fully plastic-free reservoir the Simply Good Coffee Brewer offers.
Verification: Manufacturer confirmed · Last reviewed
What it's made of
| Part | Material | Food contact |
|---|---|---|
| cold water reservoir BPA-free polymer tank with a reinforced metal structure; holds cold water before heating | Plastic other / unspecified | Yes primary 🔥 |
| internal hot water lines hand-blown glass - the hot water path is plastic-free | Borosilicate Glass | Yes primary 🔥 |
| shower screen and filter basket stainless steel; grade unspecified | Stainless Steel grade unspecified | Yes primary 🔥 |
| carafe | Borosilicate Glass | Yes primary 🔥 |
| seals / gaskets food-grade silicone | Silicone | Yes seal 🔥 |
A design-forward automatic pour-over, redesigned by Ratio as Series 2. It's a beautiful, well-built machine and a strong option for plastic-conscious buyers who want automation. If a fully plastic-free reservoir matters to you, the Simply Good Coffee Brewer edges it out, but the Ratio is the more premium, established product.
Pros
- Hot water path is plastic-free - glass lines, steel shower/basket
- Borosilicate glass carafe; premium build and design
- Far less plastic contact than a standard drip machine
Cons
- Cold water reservoir is BPA-free plastic (water sits in it before brewing)
- Expensive
- Silicone seals
Categories: Drip Coffee Machines
Sources
Every material claim above is backed by these. This is the scattered info we centralized.
- manufacturer https://ratiocoffee.com/products/ratio-eight-series-2-coffee-maker Series 2 - hot water path is stainless + hand-blown glass + silicone with plastic removed where water touches coffee; shower screen/basket stainless; carafe borosilicate glass
- review https://clivecoffee.com/blogs/learn/ratio-eight-series-2-coffee-maker-overview retailer overview confirming the plastic-free hot path and the BPA-free polymer cold reservoir
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