L-Proline

L-脯氨酸

L-Phenylalanine

L-苯基丙氨酸

Zinc standard solution

Arsenic standard solution

Sodium Sulfate

硫酸钠

1-Methyl-2-pyrrolidone

Molecular sieve 0.4 nm

Water

Yttrium standard solution

Buffer solution

即用型pH标准液