1kg Bentoniote is suitable to clear between 1300L and 2000L fruit wine/mash.
Bentonite is perhaps the most common finings agent used in the wine industry to clear wine. It is a 100% natural product made from volcanic ash! (being mined in the Drakensberg) and has been used for literally hundreds of years and still is the finings agent of choice of top quality wines.
You shouldn't just add bentonite directly to your wine or must. Instead, you should hydrate it first. This can be a bit tricky; if you don't do it correctly, you'll just end up with water and a glob of "mud."
Use 100 to 150 grams of bentonite for a 200 litre batch of wine. Take 1.5 Liter of hot water at 50 degree C (or higher), and very slowly, while stirring the water with a fork or a whisk, pour the bentonite into the water. - blending it in a blender works very well to make a good "slurry".
Add this "slurry" to the wine while stirring.
Bentonite may be added to any type of fruit wine. It may seems weird to add clay to clear wine, but don't worry - with the use of bentonite, you'll in fact be ensuring less particulate matter in your finished wine!
Now let the wine stand for two to three weeks and rack it (or decant) without disturbing the sediment.