Table 1 Quality specifications of two types of pulque*

Refractometric degree (refractometer immersion) at 20 °C

32

34.5

25

–

Refractive index (refractometer of immersion) at 20 °C

1,3390

1,3406

1,3365

1,3380

pH

> 3.7

4.2

3.5

4.0

Total acidity (lactic acid) g/100 ml

0.40

0.75

0.40

0.70

Total reducers (glucose) g/100 ml

0.10

0.80

0.20

0.50

Alcohol content % of alcohol by volume

6

9

4.0

0.6