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Nespresso instructs its customers only to use lactic descaling solution or the guarantee may be void. However lactic acid can be hard to get by and Nespressos own solution is heart-stoppingly expensive.

What could the reasons be not to use citric acid and is this a valid argument for the Nespresso machines?

  • There have been a few exchanges about the use of acids for descaling/cleaning, including this one, another, [still another]. Hopefully you'll get some responses specific to citric acid (or other cleaners) and Nespresso. See also cleaning tag for more items. – hoc_age Nov 8 '16 at 17:58
  • I realized I have sought for a similar problem in parallel after a while. You may want to check this: coffee.stackexchange.com/questions/3756/… – MTSan Dec 28 '17 at 6:44
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My opinion is that you can use citric acid. That's all that I use and I use it with my espresso machines, drip coffer maker, and I have used with Nespresso and Keurig machines. It is food safe. I buy it at my local beer and wine supply store. I have read to to use 12 - 18 grams of citric acid to a liter of water. I believe many descale solutions are made from citric acid. I use 3 1/2 teaspoons of citric acid to 40 oz of water to make my descaling solution. You can follow the manufacturers suggested routine of descaling.

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  • Are you sure there's no aluminium in the machine? If there is, I think citric acid corrodes aluminium and you don't want that. – JJJ Jan 18 at 20:16

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