. 2017 Apr 12;29(1):18. doi: 10.1186/s12302-017-0118-9

Table 3.

Aluminum uptake and the resultant percentage of TWI

Coffee	Test conditions	Mean concentration (mg/L)	Aluminum uptake adult (mg/week)^b	Percentage to TWI adult
First brew	Al-pot (n = 9)	0.564^a	1.97	2.81
First brew	Stainless steel pot (n = 3)	0.150	0.525	0.750
Third brew	Al-pot (n = 9)	0.133^a	0.469	0.670
Third brew	Stainless steel pot (n = 3)	0.018	0.063	0.090
Sixth brew	Al-pot (n = 9)	0.795^a	2.79	3.98
Sixth brew	Stainless steel (n = 3)	0.278	0.973	1.39

^aThe values shown are the arithmetic means of the results of three repetitions for each of three brands of moka pot

^bThe weekly uptake is based on an adult weighing 70 kg and a daily uptake of 500 mL coffee over a time period of 1 week (7 days)