Bentonite Microcol Alpha (1 kg)

Bentonite de Laffort Microcol Alpha (1 kg)

Natural sodium bentonite, microgranulated, with strong protein-depleting power, intended for the stabilization and clarification of musts and wines over a wide pH spectrum.

Suitable for the production of products intended for direct human consumption, within the framework of regulated use in oenology. Compliant with Regulation (EU) 2019/934.

Specifications:

MICROCOL® ALPHA is a highly pure, sheet-like bentonite. In aqueous solution, it forms a gel of varying thickness with negative surface charges, which are responsible for its reactivity with wine proteins across a broad pH range.

Oenological properties:

MICROCOL® ALPHA was specifically selected for:

• Its strong deproteinizing power towards thermosensitive proteins over a wide pH range.
• Load stability over time.
• Its very good settling of lees (significant clarifying power).
• Its ability to preserve aromatic intensity.
• Its contribution to improving the brightness of wines.

Physical characteristics:

• Appearance: granules
• Color: light gray
• SiO₂ (indicative value) (%): ≈ 57
• Al2O₃ (indicative value) (%): ≈ 22

Apparent density:

• Packed (g/cm³): ≈ 1.2
• Uncompacted (g/cm³): ≈ 1.0

Chemical analyses:

• pH (5%): 4,7/10
• Humidity (%): < 5 - 15
• Citric acid neutralization (mEq/100g): < 250
• Respirable crystalline silica (%): < 0.3
• Large particles (%): < 8
• Calcium & magnesium (mEq/100 g): < 100
• Sodium (g/kg ): < 10
• Plomb (ppm): < 5
• Mercure (ppm): < 1
• Arsenic (ppm): < 2
• Fer (ppm): < 600
• Aluminium (g/kg): < 2,5

Usage protocol

Dosage for use:

• 10 to 80 g/hL, depending on the protein instability of the wines – refer to protein stabilization tests.
• In the case of young red wines, the use of MICROCOL® ALPHA allows the elimination of unstable colouring matter (5 to 10 g/hL).

Implementation:

Dissolve MICROCOL® ALPHA in approximately 10 times its weight of water, maintaining vigorous stirring for 2 hours. Allow to hydrate for 12-24 hours. Stir vigorously to obtain a homogeneous mixture before incorporating it into the tank during a homogenization mixing. The use of warm water (50°C) is recommended to optimize rehydration.
An oenodoseur allows for injection into the wine to be treated during pump-over.

Storage recommendation:

• Store above ground in the original unopened packaging at moderate temperature in dry premises not likely to transmit odors.
• Best before end date: 4 years.
• Do not use opened packaging.

Packaging:

• 1 kg bags