pH=5.5 ± 0.1 500ml
pH =3.45 ± 0.05 1L
pH =3.5 ± 0.1 500ml
pH =4.7 ± 0.1 500ml
pH=5.00±0.1 500ml
pH ≈5.5 500ml
pH ≈6 500ml
pH=6.5±0.02(25℃) 500ml
pH=6.00±0.02(25℃) 500ml
pH=8.00±0.02(25℃) 500ml