Chemicaliƫn

alanine

glutaminezuur

lysine

ninhydrine

aceton

bufferoplossing  pH = 4,0

bufferoplossing  pH = 5,0

bufferoplossing  pH = 6,0

bufferoplossing  pH = 7,0

bufferoplossing  pH = 8,0

bufferoplossing  pH = 9,0

0,5 M zwavelzuuroplossing

0,1 M natronloog