FILTRATION
LAFFORT OENOLOGIE offers a wide range of filtration agents (Diatomyl and
Perl) to clarify must and wines as well as additives of pre-coat to optimise
the efficiency of the filtration of beverages.
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).
DIATOMYL B et R:
compound:
• 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.
Product
|
Colour
|
Average
Permeability
(L/m²/h)
|
Permeability (darcy)
|
Average
Density
|
DIATOMYL
R
|
white/pink |
4100 |
0,25 |
200 – 220
|
DIATOMYLB
|
white |
12000 |
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.
Product
|
Colour
|
Permeability
(darcy)
|
Applications
|
DIATOMYL
P 00
|
white |
4,5 ± 1 |
early filtration,
rough.
|
DIATOMYL
P 0
|
white |
3,35 ± 1 |
young wine filtration
|
DIATOMYL
P 1
|
white |
2 ± 0,6 |
Filtration for clarification
|
DIATOMYL
P 2
|
white |
1,2 ± 0,25 |
Filtration for fine clarification
|
DIATOMYL
P 4
|
Pink |
0,24 ± 0,12 |
Filtration for polishing.
|
DIATOMYL
P 5
|
Pink |
0,08 ± 0,03 |
Filtration for polishing
|
DIATOMYL
P 6
|
Pink |
0,05 ± 0,02 |
Filtration for fine polishing.
|
PERL:
Perlites are vitreous volcanic materials that are light weight and a have
a crushed cellular structure that offer different levels of permeability.
Product
|
Permeabilité
(darcy)
|
Applications
|
PERL
15
|
4 – 5 |
Juice, gross lees filtration.
(vacuum filtration)
|
PERL
10
|
2,5 – 3 |
Juice, gross lees filtration.
(vacuum filtration and press filters)
|
PERL
8
|
1,2 – 1,8 |
young wine and enzyme treated
juice,
(DE filters, press filters)
|
PERL
6
|
0,5 – 0,8 |
Filtration for fine clarification (DE filters, press filters)
|
PERL
4
|
0,15 – 0,3 |
Filtration for fine clarification (DE
filters, press filters)
|
PERL
2
|
0,08 – 0,1 |
Filtration for polishing
(DE filters, press filters)
|
DEPTH FILTER SHEETS:
SERIE
L
Laffort Oenologie has developed a range of filter sheets spanning a wide range
of grades suitable for various wine conditions and filtering requirements.
Product
|
Retention threshold
(µm)
|
Applications
|
L60
|
0,35 |
Sterile filtration for high risk
wines
|
L40
|
0,45 |
sterile filtration
|
L15
|
0,60 |
yeast 'sterile' filtration.
|
L12
|
1,0 |
fine filtration .
|
L7
|
1,5 |
Filtration for fine clarification
|
L5
|
2 |
Filtration for polishingclarification
|
L3
|
2 - 3 |
Frough-polishing filtration
|
Concerning filtration of wine samples, Laffort advises the use of OPTICAP
module
