What is the difference between Edition and non-Edition units?
All models of the Ratio Eight have these fundamental parts in common:
- Aerospace-grade die cast aluminum that is post-machined for a precise fit with incredibly tight tolerances.
- Sophisticated electronics to detect the water volume in the tank and optimize the brew cycle accordingly, meaning a small batch of just two cups is as evenly extracted and full of flavor as an 8 cup batch.
- Borosilicate glass internal supply lines.
- Precision stainless steel shower head that evenly distributes an ideal flow of hot water over the ground coffee.
Have the tank markings been improved since the original machine?
Yes. A different technique was selected to apply the tank markings, along with improved fixtures to improve accuracy. Ratio removed the markings on the carafe as it was almost impossible to get them to line up perfectly with the tank due to the handblown glass difference in wall thickness.
The plastic tank on the white model is very accurate because it does not have the glass variability.
What is the warranty policy?
Ratio offers exceptionally generous (and long) warranty periods. Read more at ratiocoffee.com/warranty.
Is there a hot plate?
No. Adding heat to brewed coffee ruins the flavor within minutes. The Ratio glass carafe is thick, tempered borosilicate glass, and with the lid in place it keeps the coffee hot for about 15 minutes.
Will you have a thermal carafe?
Yes. The Ratio Thermal Carafe is in final production stages. This carafe will retain heat for up to 4 hours. The Eight can be used with the glass or thermal carafe interchangeably. Pricing and availability will be announced soon.
Are there any plastic parts?
FDA-grade silicone and a single BPA-free plastic component are used internally. The plastic we have incorporated into the Ratio Eight is medical grade quality. Made of polysulfone, this food-grade quality plastic is FDA certified and a NSF compliant material.
Can I run the glass carafe through the dishwasher?
We do not recommend putting the Ratio glass carafe in the dishwasher. The silicone base has an adhesive that can break down from the hot water and detergent. The Ratio carafe is made of tempered borosilicate glass, similar to laboratory glass. After each brew, we recommend rinsing the carafe in warm tap water, using a drop of dish soap if you’d like. You may use the Ratio Machine Wash as frequently as you’d like to remove mineral buildup and coffee stains.
Can I use a Chemex carafe?
The Ratio Eight uses a magnet in the carafe to detect if it is safe to deliver hot water. Other coffee makers use a mechanical button that the carafe pushes against to turn the machine on. The trouble with these mechanical buttons is they tend to wear out over time, and often get stuck in the “on” position. Using a magnet eliminates this moving part. Unfortunately, the Chemex carafe does not have this magnet, so at this time it cannot be used with the Ratio Eight.
What filters do I use?
You have your choice of filter to the Ratio carafe. This can either be a conical paper filter (such as the Chemex paper filter) or a permanent stainless filter like the Able Kone for Ratio. The Able Kone for Ratio is an optional upgrade.