How do you find out what's actually inside your all-in-one liquid cooler? What's clear from an investigation by Igor's Lab is that the manufacturer's specs sheet won't always provide an accurate answer to that question. Wallossek found two out of the six coolers ripped apart and prodded for testing did not contain the copper parts the manufacturer advertised and were usually replaced by copper/zinc alloy, or brass by another name.
Igor's Lab ripped apart six 120mm liquid coolers for testing:
