I am so pleased to see that consumer labs has posted a study which analyzed for aluminum but I am concerned about some of the conclusions they draw from the testing results. I hadn’t seen this report so thank you Chris for sharing.
Consumer reports is correct, some coffee makers are a source of aluminum
. Consumer Reports only tested one drip style coffee maker and did not give the manufacturer. My husband Dennis N Crouse who is a chemist has tested several coffee makers for the amount of aluminum they add to coffee. Most drip style coffee makers are a source of aluminum because the water comes in contact with aluminum during the heating process. Here are results of my husband's testing of a drip style coffee maker. "The Black and Decker Model 1050 used for 1 year with hard water makes coffee with an aluminum level of 264% (264 mcg/L) of the World Health Organization’s maximum level in drinking water."
WHO recommends a limit of 100mcg/liter of aluminum in drinking water.
Consumer labs also tested an aluminum moka pot which added more aluminum than the drip style. These results are not surprising. My husband boiled water in an aluminum pot and here are the results. "Filling a new aluminum caldera made by Imusa with fluoridated (i.e., 0.5ppm fluoride) tap water and heating it at 350 degrees F for 1 hour resulted in 770mcg/L of aluminum being added to the water." This aluminum level is 700 % of the WHO maximum level allowed in drinking water.
Based on my husband’s testing reported above the conclusion by consumer reports: "although the amount of added aluminum in coffee brewed in aluminum pots was small" is not accurate. Dangerous levels of aluminum can be added by some coffee machine
especially ones that have been used for a while. Aluminum corrodes at a higher rate in older coffee makers resulting in higher aluminum in the coffee. The consumer lab report said the coffee pots were all new.
Consumer reports also tested something like a K cups (they called them capsules) and found they don’t add aluminum to the coffee. My husband also tested a Nespresso cup and it did not add aluminum.
Here is a link to more testing my husband did. There is a link to a video where my husband takes apart a coffee maker and shows the aluminum tubing which is where the aluminum comes from. https://prevent-alzheimers-autism-stro ... fee-maker/
Here are some aluminum free drip style coffee makers.
Krups Mocha brew
Bunn Speed/Velocity Brew
Braun coffee maker model KF7000
Capresso MG 900
Beautiful Coffee Maker