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.
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
Common questions
Does the Ratio Eight (Series 2) have plastic in it?
Yes. On the Ratio Eight (Series 2), the cold water reservoir is plastic and sits in the food path. The rest of what touches your food is borosilicate glass and stainless steel.
What is the Ratio Eight (Series 2) made of?
Part by part, the Ratio Eight (Series 2) is: cold water reservoir — plastic; internal hot water lines — borosilicate glass; shower screen and filter basket — stainless steel; carafe — borosilicate glass; seals / gaskets — silicone.
Does the Ratio Eight (Series 2) have silicone in it?
Yes — the seals / gaskets are silicone on the Ratio Eight (Series 2). They are seals rather than surfaces your food sits against, which is borosilicate glass and stainless steel.
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
Spot a mistake or something out of date? Let us know — corrections are how this stays accurate.