To

From

Citric

Malic

Sulfuric

Tartaric

Citric

--

0.96

0.70

1.07

Malic

1.04

--

0.73

1.10

Sulfuric

1.43

1.37

--

1.53

Tartaric

0.93

0.89

0.65

--

i.e., to convert acidity expressed as parts per trillion citric, to parts per trillion sulfuric multiply by 0.70.