产品描述:
pH=1.00±0.02 25°C;
pH=2.00±0.02 25°C;
pH=3.00±0.02 25°C;
pH=4.00±0.02 25°C;
pH=5.00±0.02 25°C;
pH=6.00±0.02 25°C;
pH=7.00±0.02 25°C;
pH=8.00±0.02 25°C;
pH=9.00±0.02 25°C;
pH=10.00±0.02 25°C;
pH=11.00±0.02 25°C;
pH=12.00±0.02 25°C;
pH=13.00±0.02