pH =3.5 ± 0.1 500ml
pH = 6.0 ± 0.1 500ml
pH = 1.00 ± 0.02(25℃) 500ml
pH=1.40±0.02(25℃) 500ml
pH=2.00±0.02(25℃) 500ml
pH = 1.68 ± 0.02(25℃) 500ml
50测试/盒