In wine making Bentonite is used for wine clarification.
Natural bentonite has high adsorption properties. Due to these properties bentonite is effectively used for dehazing. As a result the wine is purified. Its clarity is one of the important quality characteristics.
Produced bentonite products meet the requirements of Industrial Standards 18-49-71 “Bentonite for wine industry” and has the following quality characteristics:
|Normative documents for testing methods||Name of defined specifications and units||Permissible level||Testing results|
|IS 18-49-71||Moisture, %||5,0 - 10,0||8,6|
| IS 18-49-71||рН of water suspension, not more||9,0||9,0|
| IS 18-49-71||Swelling capacity, % not less||80,0||182,0|
| IS 18-49-71||Protein adsorption, % not less||25,0||50,0|
| IS 18-49-71||Substances, soluted in 10% acetic acid /100 g, not more||5,0||4,2|
| IS 18-49-71||Metal cations content in acetic acid extracts, mg/100 g, not more|| || |
| ||Calcium, not more||60,0||64,0|
| ||Fe, not more||80,0||28,0|
| ||Arsenic||not allowed||нет|
| GOST 30178-96||Mercury||Не допускается||нет|
| IS 18-49-71||Alkalinity, 0,1 ml of H2SO4 solution to 100g of bentonite||30,0-40,0||39,5|
| IS 18-49-71||Sand content, %||4,0||3,2|
| IS 18-49-71||Thixotropy and sediment of water suspension||10% of water suspension forms homogeneous, viscous, gelatinous mass without residue|
Production technology of «AzRPI» JV is covered by patents.
Bentonite powders are packed in Big Bags 950 kg and 50 kg polypropylene bags and shipped in bulk in gondolas.
Bentonite clay is shipped from Gazakh station of Azerbaijan railway.