Protafloc Kettle Finings Tablets · 22 g

Brighter wort from the kettle. As the wort cools, Protafloc's carrageenan pulls proteins together into clumps that settle out faster, for a clearer wort and a cleaner-looking beer.

Carrageenan kettle finings · Tablets · 1.5–7.0 g/hl (0.6–2.9 tablets/hl) · Last 10–15 min of the boil · 22 g

What it does in your beer

Protafloc is a semi-refined carrageenan, a polysaccharide derived from seaweed. Added near the end of the boil, it helps proteins coagulate; as the wort cools, the carrageenan takes on a compact, ordered structure that drags protein particles into aggregates, and those settle faster.

The payoff is clearer wort and faster wort run-off. It stays a processing step: it doesn't change how the beer tastes or smells.

At a glance

How much for a 20 L batch

1.5–7.0 g/hl → 0.3–1.4 g for 20 L, which is roughly an eighth to half a tablet (0.12–0.58 tablets). On those figures a tablet weighs about 2.4–2.5 g, so the 22 g pack is roughly 9 tablets (approx., derived from the dose table).

Yes, you'll be breaking tablets. The upside: one pack lasts a lot of brew days.

How to use

• Add it to the kettle 10–15 minutes before the end of the boil. The maker's current data sheet says 10 minutes, or the whirlpool if that isn't possible.
• The right rate depends on your malt, recipe and adjuncts — check your cold break and adjust within the range.
• Wort pH matters: the optimum is around 5.3, and a wort already below pH 4.4 won't react.

Pairs well with

Brewing a clear Czech-style pils? Try it with Czech Pilsner Malt, Žatec Semi-Early Red (Saaz) hops and SafLager W34/70.

Storage & shelf life

• Keep it sealed in its original pack, cool and out of direct sunlight.
• Recommended 10–15 °C; never above 30 °C.
• Shelf life: 3 years from manufacture when stored as recommended.

Food information

• Food business operator: Radek Milota – BO PIVO, Hlavní 35, 742 83 Olbramice, Czech Republic
• Name: Protafloc kettle finings (carrageenan tablets)
• Ingredients: semi-refined carrageenan (E407a), derived from seaweed
• Allergens: none stated by the maker
• Net quantity: 22 g (±1 g)
• Storage: sealed, cool, away from direct sunlight

Údaje o potravině (CZ)

• Název: Protafloc – čeřidlo do mladiny (tablety karagenanu)
• Složení: polorafinovaný karagenan – zpracovaná řasa Eucheuma (E407a), z mořských řas
• Alergeny: výrobce neuvádí
• Čisté množství: 22 g (±1 g)
• Skladování: uzavřené, v chladu, mimo přímé sluneční světlo
• Provozovatel potravinářského podniku: Radek Milota – BO PIVO, Hlavní 35, 742 83 Olbramice, Czech Republic

Good to know

• Tablet format, 22 g (±1 g) — about 9 tablets (approx.).
• It works in the kettle (or the whirlpool), before the wort ever reaches the fermenter.
• Using Biersol instead? That's a liquid silica sol dosed at 3–5 ml per 10 L — a different route to clearer wort.
• Protafloc is dispatched with our brewing ingredients from a partner warehouse in the Czech Republic, not with equipment.

FAQ

How much Protafloc for 20 L?
0.3–1.4 g, roughly an eighth to half a tablet.

When do I add it?
10–15 minutes before the end of the boil.

Protafloc or Biersol?
Both help clarify wort in the boil. Protafloc is carrageenan in tablet form; Biersol is a liquid silica sol.

Does it work in a soured wort?
Not below pH 4.4 — the reaction doesn't happen. The optimum is around pH 5.3.