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Compac CG Tablets contain the semi-refined, granulated form of the seaweed species Eucheuma cottonii.

The species Eucheuma cottonii is rich in the kappa isomer of carrageenan.

When added to boiling wort, kappa carrageenan reacts strongly with soluble proteins, notably the proline-rich haze precursor fraction. When the wort is cooled the carrageenan-protein complex becomes unstable and precipitates out of solution.
The clear wort that results produces a beer with enhanced processing characteristics.

Improved hot break compaction

Improved filtration

Improved yeast vitality

Compac CG Tablets are typically added to wort at rates in the range 2-6g/hl. Variations in grist make-up, malt
quality, brewing liquor, and plant operation all have a
major impact on the carrageenan requirement. The
correct addition rate is best identified by a simple
optimization test (see later).