Amino acid standards for protein hydrolysates

Amino acids listed are 0.5 μmole/mL except L-cystine at 0.25 μmole/mL in 0.2 N sodium citrate, pH 2.2. 

L-Alanine
Ammonium chloride
L-Arginine
L-Aspartic acid
L-Cystine
L-Glutamic acid
Glycine
L-Histidine
L-Isoleucine
L-Leucine
L-Lysine
L-Methionine
L-Phenylalanine
L-Proline
L-Serine
L-Threonine
L-Tryosine
L-Tryptophan
L-Valine
storage temp. 2-8°C