Bentonite is a negative charged, clay-like mineral, that, like sparkalloid, removes positively charged particles. It works best when the wine is at warmer temperature so we suggest clearing with bentonite in the late spring or early summer.
Bentonite is also more effective at a lower pH because the positive charge on proteins is stonger at lower pH levels.
Generic low level fining for five gallons: blend 1/2 tsp (approx 3g) with 1/2 cup of hot water (140 to 200 F) in a blender for 1-2 minutes. Let stand for 60 minutes, mix, and stir into wine. Let stand for 10-14 days and then rack off.