01
Filter-pad guide
Cellulose purity, depth filtration, porosity, GSM, strength and trial design.
Open filter-pad guide →Engineering knowledge
Industrial Filtration Resources
Practical notes for engineers, purchase managers and plant teams evaluating depth pads, papers, cartridges and clarification systems.
Process feedClarified filtrate
Technical note 01
Understanding depth filtration
A depth medium is a three-dimensional porous network. Particles are retained within the media and at the upstream cake, so performance changes as loading progresses. Initial pressure drop, pressure rise, filtrate clarity and total throughput are more informative together than any single catalogue property.
Parameters that are related but not interchangeable
- Thickness: physical sheet depth; it can influence holding capacity and equipment fit.
- GSM: media mass per square metre; not a direct micron rating.
- Porosity/permeability: ease of fluid passage under a defined method.
- Wet and dry strength: resistance to handling and rupture before and after saturation.
- Retention: fraction of a defined challenge captured under stated conditions.
- Efficiency: a percentage that is meaningful only with particle size, challenge and test method.
Technical note 02
Filtration enquiry checklist
- Fluid name and complete composition
- Normal and maximum temperature
- Viscosity at filtration temperature
- Batch volume or continuous flow
- Solids concentration and particle information
- Desired filtrate clarity or retention target
- Existing filter type and housing model
- Media dimensions and drawing
- Clean and terminal differential pressure
- Current grade and observed problem
- Cleaning, sanitation or disposal method
- Required certificates and declarations
Selection tools
Use the right technical landing page
02
Gelatin clarification
Temperature, viscosity, staged solids removal, yield and polishing.
Open gelatin guide →03
Cartridge comparison
Pleated, spun, wound, steel and end-connection considerations.
Compare cartridges →04
Quality documentation
How to define a useful grade and certificate package.
Review quality approach →05
Food & beverage
Clarification, sensory protection, yield and hygiene factors.
Read application guide →06
Chemical compatibility
A process-led framework for chemically demanding streams.
Read application guide →Application support
Turn your operating data into a focused trial
Send the checklist with a current media sample, drawing or recent batch trend if available. This helps identify practical candidates without unsupported assumptions.