Prepor PP
PREPOR PP filter cartridges will significantly reduce numbers of yeast and spoilage organisms from beverage products, to provide extremely cost-effective microbial stabilization. The cartridges will also ‘condition’ liquids and can be used to improve the filterability of products prior to terminal stabilization by thermal or filtrative methods.
The filters will withstand harsh operational conditions and repeated cleaning, making them ideal for extended use in the bulk conditioning of products prior to membrane ‘sterilisation’ and pasteurisation. Their mechanical strength and wide chemical resistance also make them suitable for long-term contact with strong cleaning agents and detergents.
Technical Specifications
Materials of Construction
- Filtration Media: Polypropylene
- Upstream Support: Polypropylene
- Downstream Support: Polypropylene
- Inner Support Core: Polypropylene
- Outer Protection Cage: Polypropylene
- End Caps: Polypropylene
- End Cap Insert (if applicable): 316L Stainless Steel
- Standard o-rings/gaskets: Silicone / EPDM
- Capsule Body: Polypropylene
- Capsule Vent Seals: Silicone
Food and Biological Safety
Materials conform to the relevant requirements of 21CFR Part 177, EC1935 / 2004 and current USP Plastics Class VI – 121 °C and ISO10993 equivalents.
Recommended Operating Conditions
Up to 70 °C (158 °F) continuous operating temperature and higher short-term temperatures during CIP to the following limits:
Capsules may be operated up to a temperature of 40 °C (104 °F) at line pressures up to 5.0 barg (72.51 psig) for liquids and 4.0 barg (58.01 psig) in air / gas.
Effective Filtration Area (EFA)
10¨ (250 mm) 0.5 m² (5.38 ft²)
Cleaning and Sterilisation
PREPOR PP cartridges can be repeatedly steam sterilised in situ or autoclaved at up to 135 °C (275 °F). They can be sanitised with hot water at up to 90 °C (194 °F) and are compatible with a wide range of chemicals. Capsules can be repeatedly autoclaved up to 135 °C (275 °F). For detailed operational procedures and advice on cleaning and sterilisation, please contact the Technical Support Group through your usual Parker domnick hunter contact.
Retention Characteristics
The retention characteristics of PREPOR PP have been determined by a combination of controlled laboratory tests and in-use monitoring for a number of organisms. Bacterial challenge testing is carried out to methods specified in ASTM F838-05.
Features and Benefits
- Yeast and bacterial reduction to provide short term microbial stability
- Adjustment of filterability of bulk liquids after tank storage or transport
- Fine clarification to provide bright finished product
- Prolonged contact with hot water, steam and chemicals
- Prefiltration duty to extend the lifetime of downstream microporous filters
