Light transmission in % : 75 and more
Flavour : subtle taste
Colour : slightly golden
US equivalent: US Grade A Light Amber

Light transmission in % : 60.5 - 74
Flavour : sweet and delicate taste
Colour : golden
US equivalent : US Grade A Medium Amber

Light transmission in % : 44 - 60.4
Flavour : typical maple taste
Colour : amber
US equivalent: US Grade A Dark Amber

Light transmission in % : 27 - 43.9
Flavour:  pronounced maple taste
Colour : dark
US equivalent: US Grade B

Light transmission in % : 26.9 and less
Flavour: full-flavoured, slightly caramelized taste
Colour : very dark
US equivalent : US Grade B