Characteristics :
Very fine white powder, neutral odor.
Humidity : < 8 %
pH (2 %) 9.5 – 10.5
Grade : < 200 mesh
0.5 – 1.7 mm for powder bentonite
Swelling rate 15 – 18 ml/g
Protein removal power > 80 %
Mineral composition
Montmorillonite > 80 %
Crystalline silica (quartz and cristobalite) < 3 %
Properties :
• Very large adsorption surface: from 500 to 800 m 2/g, depending on the medium in which it is suspended.
• Wide activity range, unaffected by pH or temperature variations.
• High reactivity with unstable wine proteins, including low molecular weight fractions.
The selective adsorption capacity of PERFORMA helps to considerably reduce the required addition rate and minimise effects on the aromatic characteristics of treated wine.
Applications :
• Protein stabilization ;
• Removal of unstable colouring matter;
• Removal of blush (slight pink colour) from musts and white wines.
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