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DETERMINATION OF BENTONITE REQUIREMENT
9. DETERMINATION OF BENTONITE REQUIREMENT
9.1. SAMPLE PREPARATION
• Fill four HANNA vials with 25 mL of unfiltered wine sample.
• Prepare a bentonite suspension of 2.5%.
Note: Always use a bentonite suspension with the same wetting degree as the suspension that
is used in production.
• Use the 1 mL syringe to add 0.25 mL of bentonite suspension to the vial #1; then add 0.50 mL
to #2, 0.75 mL to #3 and 1 mL to #4.
Note: in order to measure the exact volume of bentonite suspension with the syringe, follow the
instructions on page 13.
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