Frequently asked questions
What does CMYK mean and why does it matter?
CMYK (Cyan, Magenta, Yellow, Black) represents the four primary colours used in printing and colour reproduction. Testing across CMYK provides comprehensive safety validation because different pigments have different chemical compositions. Learn more about our CMYK colour selection methodology.
Why aren't all products certified in standard CMYK colours?
Not all manufacturers produce their filaments across the complete CMYK spectrum. When full CMYK certification isn't available, we select alternative colours that provide the broadest safety coverage based on pigment chemistry and common use cases. Read our detailed explanation of colour selection.