Wire Mesh – Fine micronic wire mesh media in which the warp and weft wires pass alternately over two and under two wires and in which the warp wires are heavier in diameter than the west wires. Wire mesh is a surface type filtration media. Porous Sintered – Filtration media in which metal powders are pressed and sintered to form a porous material used for depth filtration. Porous sintered material is a depth type of filtration media.
Cleaning Process:
Wire Mesh Filter:
Pre-Wash: Parts are to be hand washed using liquid detergent or equivalent. Oils and grease to be removed using acetone or IPA (Isopropyl Alcohol)
First Rinse: Parts are to be rinsed using filtered non‐DI Water to remove any detergent or solvent residue. DI water rinses are acceptable but not mandatory in this step
Ultra-Sonic Wash: Parts are to be immersed in degassed heated (105° ‐ 140° F) wash solution for no less than 30 minutes. Use OCC (Octagon) for random metal fiber elements.
Second Rinse: Parts to be rinsed using DI Water to remove any cleaning fluid
Pre Drying (if necessary): To expedite drying of DI Water, dip PIECE in a de‐wetting agent of IPA (Isopropyl Alcohol).
Drying Techniques:
N2 (99.9% pure filtered Nitrogen) Drying (when necessary): Parts shall be dried using an N2 blow dryer to remove any DI water or de‐wetting rinse residue.
Conventional Oven Drying: Parts shall be dried using an oven (212° ‐ 230°F) to remove any DI water. Intake to conventional oven should be filtered to a level greater than the media it is cleaning.
Porous Sintered Filter:
1: Determine what contaminants are present in the Filter
2: Determine the chemical agents that will dissolve these contaminants (without dissolving or attacking the porous metal)
Chemical agents compatible with 316/316L stainless steel porous media include, but are not limited to:
Water at any temperature
Alcohols
Acetone
Ammonia
Organic solvents
Methylene chloride
Industrial cleaners
Solvents and detergents
