Citric Acid Passivation and Descale

Boilers can have scale build up depending on the hardness of the water used.

We recommend a simple food grade method for passivation that also acts to descale the machine.

1:10 ratio of water to Citric acid power + heat.

This method chemically converts the outer layer of stainless to remove any free irons that could lead to rust. You can get bags of Citric Acid online from places like Amazon.

Steps:

Heat the solution in the boiler, leave for 15-20 minutes. You can then run it through the grouphead a few times for good measure.

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