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
pH = 9.21 ± 0.02(25℃) 500ml
pH = 9.18±0.02 (25℃) 500ml
pH = 9.184(25℃) 500ml