1%酚酞指示液酚酞指示剂10g/L变色范围PH8.2~10.0(无色→红)

1%酚酞指示液酚酞指示剂10g/L变色范围PH8.2~10.0(无色→红)

1%酚酞指示液酚酞指示剂10g/L变色范围PH8.2~10.0(无色→红)

1%酚酞指示液酚酞指示剂10g/L变色范围PH8.2~10.0(无色→红)

酚酞指示剂PP标准溶液C20H14O4酸碱变色范围PH8.0-10.0博林达有证