ChemTech CHT & POLYFIL PES Cartridge Filters

CHT Melt-Blown Depth Cartridges

ChemTech CHT cartridges are manufactured from 100 % melt-blown polypropylene fibre. The graded pore structure decreases from the outside toward the core, trapping larger particles in the outer layers and finer particles inward. This extends effective filtration area and dirt-holding capacity compared with surface-type filters. Contaminants remain inside the matrix even if flow direction changes.

The cartridges are thermowelded; no adhesives or binders are used. The manufacturer catalogue states conformity with the European Pharmacopoeia (it references the Ph. Eur. III. edition). Users who need a statement against the current edition should request it from the manufacturer. The cartridges also carry a PZH certificate.

Absolute ratings run from 0.5 µm to 120 µm at 99.98 % efficiency. Lengths are 5", 10", 20", 30" and 40" (other lengths on request), identified in order codes by a length digit before the CHT type code (for example 30CHT for a 30" cartridge). End-cap options include DOE (flat cut end), M (double open end), 222 flat (2FL), 222 fin (2FN), 226 flat (6FL), 226 fin (6FN), and FC flat (1/2" o-ring). O-ring materials are B (NBR), E (EPDM), S (silicone), V (Viton) and O (polyethylene foam). A typical order code is structured as follows: 30CHT-5-6FNS denotes a 30" cartridge, 5 µm absolute, 226 fin end cap, silicone o-ring.

Clean differential pressure for a 10" cartridge at 1 m³/h, 25 °C and 1 cP is 730 mbar for the 0.5 µm grade and 410 mbar for the 1 µm grade.

POLYFIL PES 0.20 µm Microbially Retentive Membrane

ChemTech POLYFIL PES cartridges use a patented, microbiologically retentive polyethersulfone membrane. Grades start at 0.20 µm. The asymmetric structure with high void volume gives high dirt-holding capacity and high flow. The membrane is inherently hydrophilic, so pre-wetting is unnecessary, and it exhibits low chemical and protein binding to minimise adsorptive loss of active ingredients. Extractable levels are low.

The ChemTech catalogue describes the membrane as microbially retentive and validated to HIMA guidelines. The cartridges can be easily and repeatedly integrity tested. Chemical compatibility spans the full pH range and includes many organic solvents.

Order codes combine length, pore size and end-cap type. For example, PLFPS3-020-6-S identifies a 30" cartridge, 0.20 µm PES membrane, 226 o-ring/flat end cap (code 6) and silicone o-ring. End-cap code 3 corresponds to 222, and code 6 corresponds to 226.

Applications

CHT cartridges are used for RO prefiltration, particle retention in chemical and petrochemical process liquids, clarification in food and beverage production, general-purpose depth filtration in water-treatment lines, and contamination control in coating and paint baths.

POLYFIL PES cartridges are used for microbially retentive filtration in pharmaceutical manufacturing, microbiological stabilisation in food and beverage lines, filtration of biotechnological process liquids, low-loss filtration of protein-containing solutions, and filtration of formulations with organic solvents.

How Mikron Proses Helps

Mikron Proses selects the correct cartridge grade, length and end-cap configuration for your process conditions and existing housings. The team verifies compatibility with 222 and 226 O-ring sanitary housings, supplies POLYFIL PES cartridges with 222 or 226 O-ring end caps for housings that use the matching end-cap code (housing dimensions are confirmed before ordering), and interprets order codes such as 30CHT-5-6FNS or PLFPS3-020-6-S. For guidance on matching depth and membrane stages, see the cartridge filter selection guide. Where current-edition pharmacopoeia conformity statements are required, Mikron Proses helps route the request to the manufacturer.

For industrial filtration sizing, housing compatibility checks or a quotation, please use the contact page.