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Table 1 Quality specifications of two types of pulque*

From: Exploring the potentialities of the Mexican fermented beverage: Pulque

Specifications Type I Type II
Minimum Maximum Minimum Maximum
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
  1. *Adapted from Salud Publica de México, Legislación, Norma oficial mexicana para el pulque manejado a granel, NMX-V-037, p. 845, Época V, Volumen XIV, Número 6. 30 de septiembre de 1972. Available at [35]