DANMIL DEPTH FILTRATION RANGE
DANMIL DEPTH FILTRATION RANGE
The Depth Filtration Range filter sheets are designed to filter all types of liquids and include filters for wine, oil, beer and juices.
All made of natural, first choice and particularly pure materials, carrying a cationic charge: finely fibrillated cellulose fibres of broadleaf trees and conifers, kieselguhr and perlite at different concentrations.
WHY CHOOSE DANMIL FILTER SHEETS?
- 01Minimum loss of product due to dripping
- 02Low absorption of colour
- 03Low release of calcium and iron, especially in distillate filtration
- 04Easy elimination of "paper taste"
- 05Quality of the raw materials (cellulose, kieselguhr and perlite)
- 06Wide range to fulfil any demand (0.2 and 35 μm)
- 07High filtration efficency thanks to a sheet thickness of 3.9 mm
- 08No shredding (the sheet is precision cut using water at 12,000 bar)
- 09High inspection standards: the sheets undergo laboratory analysis for traceability and verification of the filtering surface using a special scanner
- 10Easy to rigenerate and excellent burst strength
DANMIL DEPTH FILTRATION RANGE
The DANMIL depth filtration range filters are available in standard 40x40 sizes, with special formats on request.
1. SHEETS FOR STERILIZING FILTRATIONPRODUCTS
100 / 110
130 / 140TYPE OF FILTRATION
Sterilizing filtration with reduction of microorganismsDESCRIPTION
The filters are characterized by a high degree of microbiological retention, which is possible thanks to the narrow pore structure of the filter medium, combined with an electrokinetic potential with adsorption action.APPLICATIONS
Their ideal application is in sterile cold bottling, aimed at improving the preservation of wines, beer and juices. Due to the high retention capacity of the colloidal components, these sheets can also be used as prefilters upstream of the membrane filtration.
2. SHEETS FOR REDUCTION OF MICROORGANISMS AND MICROFILTRATIONPRODUCTS
40 / 40 HF / 50
70 / 85 HFTYPE OF FILTRATION
Filtration with reduction of microorganisms and microfiltrationDESCRIPTION
They achieve a high level of clarification due to their effective retention capacity of the finest particles, combined with microbiological retention.APPLICATIONS
They are particularly suitable for the storage and bottling of microbiologically stable wines.
3. SHEETS FOR COARSENING AND BRIGHTENING FILTRATIONPRODUCTS
06 / 09 / 12 HF
15 / 20 HF / 30TYPE OF FILTRATION
Coarsening and brightening filtrationDESCRIPTION
They have a high-volume hollow structure and a high turbidity absorption capacity.APPLICATIONS
They are specially designed to ensure the brightening of the product, be it wine, beer, oil or juices.
HOW DO YOU DISTINGUISH A QUALITY FILTER SHEET?
By the standard of quality of the raw materials: if poor quality raw materials are used, then the final filtration result will often also be poor, with loss of product due to dripping and loss of colour. DANMIL depth filters are made of finely fibrillated cellulose fibres of broadleaf trees and conifers, kieselguhr and perlite at different concentrations. These are natural, first choice and particularly pure materials, carrying a cationic charge which defines the quality of the filter sheet.
HOW ARE FILTER SHEETS USED?
How to use:
- - do not use damaged or modified filter sheets;
- -handle filter sheets with extreme care when positioning them in the filter press, avoiding impacts, bending and abrasions.
On first filtration:
- - wash the filter sheets with water at a speed of 1.5 times that of filtration (if this has not already been done after sterilization).
- -solutions with a high alcohol content, as well as products which cannot be washed with water, must be flushed around the circuit. The solution must then be disposed of.
HOW ARE FILTER SHEETS STERILIZED?
DANMIL depth filters must be sterilised with hot water or saturated steam at a maximum temperature of 134°C. It is necessary to loosen the compressed filter pack slightly and make sure that the complete sterilization of the entire filter system is carried out. Important: final compression should only be performed after the filter pack has cooled down.
STERILIZATION WITH VERY HOT WATER
(the flow rate must correspond to at least the speed used during filtration and the water must be demineralised and free from impurities)
Duration: 30 minutes, after the temperature has reached 85°C on all the valves
Pressure: at least 50 kPa (0.5 bar) at the filter outlet.
(the steam must be free from impurities)
Max. temperature 134°C (saturated steam)
Duration approx. 20 minutes after the steam starts to be released from all the filter valves
Washing 50 L/m² at a speed of 1.5 times that of the flow after sterilisation.
HOW SHOULD PRESSURE DIFFERENCES BE MANAGED?
Depending on the standard operating mode, filtration must be terminated when the maximum pressure difference allowed of 300 kPa (3 bar) is reached. To work in absolute safety, a pressure difference of 150 kPa (1.5 bar) must not be exceeded during filtration, for the retention of microorganisms.
HOW SHOULD THE FILTER SHEETS BE STORED AND PRESERVED?
The depth filtration sheets are made from highly absorbent materials, so:
- - they must be handled with care during transportation and storage in the warehouse;
- - they must be stored in a dry, well-ventilated place, free from odours;
- - they must not be exposed to direct sunlight;
- - they are intended for immediate use and must be used within 36 months from the date of production.
CAN I REGENERATE MY FILTER SHEETS?
The performance of DANMIL filters can be increased by regenerating and backwashing them with demineralised water. This helps to significantly reduce the cost of filtration.
HOW MANY FILTER SHEETS SHOULD I USE?
The minimum ideal filtration uses about 30 sheets.
HOW MANY FILTERS ARE THERE IN A PACK?
One box contains 100 filter sheets, packed in sterile packs of 25.