1% betekent 1/100 ste deel ofwel:
100% = 100 gram in 100 gram of 100 gram in 100 ml
100 g/ 100 g of 100 g/ 100 ml
1 % g/g = 1 gram in 100 gram of 0,01 gram/g of ...
1 % g/v = 1 gram in 100 ml of 0,01 gram/ml of ...
1 % v/v = 1 ml in 100ml of 0,01 ml/ml of ...