Cafiza® Espresso Machine Cleaning Powder has a concentrated formula which eliminates residue in group heads, valves, and lines. Both foam and solubility are balanced for powerful cleaning and optimal rinsing. Cafiza® Espresso Machine Cleaning Powder is integral to the daily back-flush regimen and is recommended for use with a wide range of traditional espresso machines.
Urnex recommend usinga maximum of 3g of Cafiza powder during each cleaning cycle, so the 125g tub should give you at least 36 doses.
A guide to using Cafiza can be found here.