PRE-COATING PRODUCTS:
Developed in Laffort’s SARCO laboratory, two cellulose pre-coat products are available either in pre-mixed or pure formulation. These preparations satisfy a range of technical specifications for use.
Prior to filtration operations, the formation of pre-coat is a critical step that determines not only the effectiveness of filtration and improves the clogging index, but also the length of the filtration cycle.
CLAIRULOSE:
Made with different types of pure cellulose, ensures a perfect retention of the finest particles for improved clarification and brilliance.
Used during the pre-coat formation (400-600 g/M) or associated with diatomaceous earth (DE) or perlite.
FILT SPECIALE:
Combination of diatomaceous earth (DE) and alpha- cellulose with a high zeta potential. Ensures an adsorption capacity to improve filtration and delay clogging.
Used during pre-coat formation (600-700 g/M).
• Staple Cotton
• Alpha-cellulose fibre treated to increase electrokinetic potential
• Mixture of diatomaceous earth and perlites for a perfect retention of particles and optimal screening.
Diatomyl B and R present an absolute chemical inertia towards must and wines. They ensure better stability of the pre-coat throughout the filtration cycle.
| Reference | Color | Averaged Permeability (L/m²/h) |
Permeability | Averaged density |
|---|---|---|---|---|
| DIATOMYL® R | White/rosé | 4100 | 0.25 | 200-220 |
| DIATOMYL® B | White | 12 000 | 0.85 | 180-190 |
FILTRATION PROCESSING AIDS
DIATOMYL: A selection of Diatomaceous earths of various permeabilities for food processing in wines, juices, ciders, oil etc.
| Reference | Color |
Permeability | Applications |
|---|---|---|---|
| DIATOMYL® P00 |
White | 4.5 ± 1 |
Precocious filtration, roughing out. |
| DIATOMYL® P0 | White | 3.35 ± 1 | New wines filtration. |
| DIATOMYL® P2 | White | 1.2 ± 0.25 |
Fine clarifying filtration. |
| DIATOMYL® P4 | pink | 0.24 ± 0.12 | Finishion filtration. |
| DIATOMYL® P5 | pink | 0.08 ± 0.03 | Fine finishion filtration. |
| DIATOMYL® P6 | pink | 0.05 ± 0.02 | Very fine finishing filtration. |
PERL
Perlites are vitreous volcanic materials that are light weight and a have a crushed cellular structure that offer different levels of permeability.
| Reference |
Permeability (darcy) | Applications |
|
|---|---|---|---|
| PERL 15 |
4 - 5 |
|
|
| PERL 10 | 2,5 - 3 |
Filtration musts, mires, dregs. (vacuum filter and filter presses) |
|
| PERL 8 | 1,2 - 1,8 |
Filtration enzymed musts, new wines (filter alluvium, filter presses) | |
| PERL 6 | 0,5 - 0,8 |
Fine clarifying filtration (filter alluvium, filter presses) |
|
| PERL 4 | 0,15 - 0,3 |
Very fine filtration (filter alluvium, filter presses) | |
| PERL 2 | 0,08 - 0,1 |
Finishing filtration (filter alluvium, filter presses) |
DEPTH FILTER SHEETS:SERIE L
LAFFORT has developed a range of filter sheets spanning a wide range of grades suitable for various wine conditions and filtering requirements.
| Reference |
Retention | Applications |
|---|---|---|
| L60 |
0,35 µm |
Sterile sensitive wines filtration. |
| L40 | 0,45 µm | Sterile filtration. |
| L15 | 0,60 µm | Filtration with a low rate of germ. Sterilising towards yeasts. |
| L12 | 1,0 µm | Fine filtration. |
| L7 | 1,5 µm | Clarifying filtration. |
| L5 | 2 µm | Maturing filtration. Precocius filtration. |
| L3 | 2 - 3 µm | Roughing down filtration. Good dregs retention. |
