Filter Made
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 Canon 72mm PL C B polarizing Filter Genuine Made in Japan $159.99 Time Remaining: 26d 13h 19m Buy It Now for only: $159.99 |
 SCHNEIDER B+W FILTER 62EW POLARIZER EXCELLENT CONDITION MADE IN GERMANY $38.00 Time Remaining: 6h 28m Buy It Now for only: $50.00 |
 OSAWA 55mm 4 point Cross STAR Made In Japan NEW 55 $0.99 Time Remaining: 10h 31m Buy It Now for only: $1.90 |
 B+W Neutral Density ND 1000x 110 30 10stop Filter 77mm Made In Germany $113.50 Time Remaining: 27d 13h 6m Buy It Now for only: $113.50 |
 Tiffen 52 52mm HAZE 1 UV Filter Made in USA $8.00 Time Remaining: 12h 17m Buy It Now for only: $11.49 |
 B+W MRC 010 UV Brass Filter New Made in Germany 77 77mm $66.90 Time Remaining: 3d 13h 24m Buy It Now for only: $66.90 |
 77mm TIFFEN Filter Kit ND NEUTRAL DENSITY 06 +09 +12 ND4 ND8 ND16 Made in USA $98.95 Time Remaining: 12h 17m Buy It Now for only: $109.95 |
 NIKON NIKKOR SLR LENS 70 210 14 56 AF+UV FILTER SKY 1 A62mm made in USA $71.08 Time Remaining: 12h 57m |
 Hoya 72mm Close Up Macro Filter Set +1 +2 +4 Kit 72 mm made in japan $66.00 Time Remaining: 29d 14h 17m Buy It Now for only: $66.00 |
 Osawa 55mm Soft Focus Filter Made In Japan Brand New $0.99 Time Remaining: 13h 16m Buy It Now for only: $1.90 |
 Marumi 67mm DHG UV L390 Digital High Grade 67 mm Filter Made In Japan Genuine $25.50 Time Remaining: 11d 15h 38m Buy It Now for only: $25.50 |
 OSAWA 55mm CLOSE UP +2 FILTER MADE IN JAPAN Brand New $0.75 Time Remaining: 13h 17m Buy It Now for only: $1.90 |
 OSAWA 55mm CLOSE UP +3 FILTER MADE IN JAPAN Brand New $0.99 Time Remaining: 13h 17m Buy It Now for only: $1.90 |
 B+W 77mm 007 XS PRO MRC NANO ClEAR Digital 77 mm Filter Made In Germany 1066111 $103.50 Time Remaining: 27d 13h 15m Buy It Now for only: $103.50 |
 Canon 52mm Close up Lens 240 Label N in Original Case and Box Made in Japan $28.98 Time Remaining: 13h 50m |
 B+W 67mm 007 XS PRO MRC NANO ClEAR Digital 67 mm Filter Made In Germany 1066109 $66.50 Time Remaining: 11d 12h 36m Buy It Now for only: $66.50 |
 Canon 52mm Close up Lens 450 Label N in Original Case and Box Made in Japan $28.98 Time Remaining: 13h 57m |
 Tiffen 43 mm Circular Polarizer Filter Mint made in Japan $19.90 Time Remaining: 21h 34m Buy It Now for only: $40.00 |
 Daisee 46mm UV Haze PRO DMC Slim Filter 46 mm Digital MRC Made In Japan NEW $20.90 Time Remaining: 24d 14h 8m Buy It Now for only: $20.90 |
 OSAWA 49mm CLOSE UP +2 FILTER MADE IN JAPAN Brand New $0.49 Time Remaining: 1d 1h 50m Buy It Now for only: $1.90 |
 Marumi 67mm DHG Super UV L390 Digital High Grade Filter Made In Japan Genuine $38.50 Time Remaining: 11d 15h 53m Buy It Now for only: $38.50 |
 OSAWA 49mm 4 point Vari Cross STAR Made In Japan New $0.99 Time Remaining: 1d 1h 50m Buy It Now for only: $1.50 |
 OSAWA 49mm CLOSE UP +3 FILTER MADE IN JAPAN Brand New $0.99 Time Remaining: 1d 1h 50m Buy It Now for only: $1.90 |
 Kenko 62mm Circular Polarizing Filter CPL Made in Japan $27.99 Time Remaining: 21d 12h 7m Buy It Now for only: $27.99 |
 FX 46mm 4 point Star Filter Made In Japan DEMO 46 $0.09 Time Remaining: 1d 1h 50m Buy It Now for only: $0.99 |
 B+W 49mm Slim CPL Circular Polarizer Polarizing Filter 49 mm Made In Germany $39.50 Time Remaining: 19d 13h 39m Buy It Now for only: $39.50 |
 FX 46mm UV FLITER Made In Japan DEMO 46 $0.09 Time Remaining: 1d 1h 50m Buy It Now for only: $0.99 |
 FX 46mm Soft Focus Filter Made In Japan DEMO $0.09 Time Remaining: 1d 1h 50m Buy It Now for only: $0.99 |
 B+W 67mm 010 UV Haze F PRO Filter with Brass Ring Made in Germany Coated 70138 $28.90 Time Remaining: 18d 18h 1m Buy It Now for only: $28.90 |
 TOKO 58mm Slim Protection Filter Made In Japan Used R024 $5.99 Time Remaining: 1d 5h 32m |
 Marumi 77mm DHG UV L390 Digital High Grade 77 mm Filter Made In Japan Genuine $30.90 Time Remaining: 11d 15h 35m Buy It Now for only: $30.90 |
 Vintage Panchromar G3 Photo Lens Filter M49x075 Made in DDR $0.99 Time Remaining: 1d 5h 48m |
 B+W KSM 55 Linear Polarizer Filter New Made in Germany Zeiss Contax $39.00 Time Remaining: 1d 8h 17m |
 Hoya 77mm PRO1 NDx16 ND 16 Neutral Density Filter 77 mm Made In Japan Genuine $63.90 Time Remaining: 25d 13h 29m Buy It Now for only: $63.90 |
 B+W KSM 67 AUF Filter New Made in Germany Zeiss Contax $39.00 Time Remaining: 1d 8h 18m |
 B+W MRC 010M UV Haze F PRO Filter Made in Germany 77mm $66.90 Time Remaining: 29d 12h 57m Buy It Now for only: $66.90 |
 B+W 82 MRC UV Haze Filter New Made in Germany Zeiss Contax $59.00 Time Remaining: 1d 8h 19m |
 B+W 49mm MC UV Haze Filter New Made in Germany Zeiss Contax $49.00 Time Remaining: 1d 8h 20m |
 B+W 52mm MRC 010M UV Haze F PRO Multi Coated Brass Filter Made in Germany 70209 $28.90 Time Remaining: 18d 18h 11m Buy It Now for only: $28.90 |
 B+W 82E KR15 Skylight Filter New Made in Germany Zeiss Contax $29.00 Time Remaining: 1d 8h 24m Buy It Now for only: $39.00 |
 B+W 010 UV Haze F PRO 52mm Filter Brass Ring Made in Germany Part Number 70100 $20.50 Time Remaining: 18d 18h 2m Buy It Now for only: $20.50 |
 Lot of 5 Schneider B+W 55MM ND Neutral Density F Pro Filters Made in Germany $22.49 Time Remaining: 1d 8h 32m Buy It Now for only: $24.99 |
 Schneider B+W 55mm ND filter for Canon Nikon Minolta Kodak Made in Germany $6.99 (1 Bid) Time Remaining: 1d 9h 49m |
 TIFFEN 67MM Filter Kit ND NEUTRAL DENSITY 06 +09 +12 ND4 ND8 ND16 Made in USA $63.95 Time Remaining: 27d 12h 7m Buy It Now for only: $63.95 |
 Hasselblad 60 UV SKY Filter in Box Made in Germany $5.50 (2 Bids) Time Remaining: 1d 10h 55m |
 B+W 52mm Neutral Density ND 1000x 110 30 Coated Filter 52 mm Made In Germany $50.50 Time Remaining: 27d 13h 22m Buy It Now for only: $50.50 |
 VINTAGE NIKON 50MM SERIES E LENS 118 MADE IN JAPAN W FILTER AND CAPS $9.99 (1 Bid) Time Remaining: 1d 14h 4m |
 B+W Schneider circular polarizer slim model 72 mm german made $40.00 Time Remaining: 2d 3h 5m Buy It Now for only: $65.00 |
 B+W MRC 010M UV Haze F PRO Filter Made in Germany 72mm $49.90 Time Remaining: 29d 12h 59m Buy It Now for only: $49.90 |
 3 Rolleiflex Camera Lens Filters Rollei U V YellowBlue Made in Germany $44.99 Time Remaining: 2d 5h 43m Buy It Now for only: $49.99 |
 B+W 60mm 010 UV Haze F PRO Filter 60 mm Brass Ring Made in Germany Coated NEW $33.90 Time Remaining: 27d 13h 18m Buy It Now for only: $33.90 |
 Hasselblad Heliopan German made 6x Cross filter in bay50 $35.00 Time Remaining: 2d 5h 55m |
 Vivitar 52mm CENTER Halo SPOT Made InJapan NEW 52 $0.99 Time Remaining: 2d 8h 49m Buy It Now for only: $1.99 |
 Marumi 77mm 77 Grad Gray Graduated Grey Optical Lens Filter made in Japan NEW $30.91 Time Remaining: 21d 8h 51m Buy It Now for only: $30.91 |
 MILO 58 mm Multicoated Professional Filter Y2 Made in Japan $9.99 Time Remaining: 2d 9h 19m |
 Canon 500D 58mm Close up Lens Genuine Made in Japan New $99.99 Time Remaining: 27d 2h 25m Buy It Now for only: $99.99 |
 MILO 67 mm Multicoated Professional Filter Y3 Made in Japan $9.99 Time Remaining: 2d 9h 26m |
 MILO 67 mm Multicoated Professional Filter O2 Made in Japan $9.99 Time Remaining: 2d 10h 26m |
 Nikon 52mm C PL1L Slip in Circular polarizing Filter Genuine Nikon Made in Japan $249.99 Time Remaining: 9d 20h 56m Buy It Now for only: $249.99 |
 DIGITAL Brand 52mm FLD FL D filter Made in Japan $5.44 Time Remaining: 2d 11h 22m Buy It Now for only: $5.99 |
 B+W 502 Graduated Neutral Density ND Gray Grey Filter 72mm Made In Germany $61.50 Time Remaining: 19d 17h 22m Buy It Now for only: $61.50 |
 Tiffen 58 58mm HAZE 1 UV Filter Made in USA $9.00 (1 Bid) Time Remaining: 2d 12h 12m |
 Tiffen 52mm UV Ultra Violet Glass Filter 52 mm Made in USA 0 SH $8.94 Time Remaining: 2d 12h 12m Buy It Now for only: $9.95 |
 B+W 43mm MRC 010M UV Haze F PRO Filter Made in Germany Multi Coated 43 mm 23185 $34.90 Time Remaining: 19d 13h 36m Buy It Now for only: $34.90 |
 Telesar 52mm Y2 coated filter Japan made $0.99 Time Remaining: 2d 12h 16m Buy It Now for only: $4.00 |
 Marumi IR 77mm 77 Filter Infrared Infra Red 830HB 830nm 830 made in Japan NEW $69.68 Time Remaining: 12d 13h 36m Buy It Now for only: $69.68 |
 VIVITAR 52mm Skylight 1A Camera Lens Filter Made In Japan $0.99 Time Remaining: 2d 12h 37m |
 Heliopan 72mm Green 13 Filter NEW MINT Made in Germany $9.99 (1 Bid) Time Remaining: 2d 12h 42m |
 Brand New Kenko 49mm ZETA UV L41 W ZR Super Multi Coating Filter MADE IN JAPAN $36.99 Time Remaining: 12d 20h 48m Buy It Now for only: $36.99 |
 COKIN FOUR FILTERS SKY OCEAN MADE IN FRANCE $4.99 (1 Bid) Time Remaining: 2d 12h 48m |
 B+W 82mm Kaesemann KSM CPL MRC Circular Polarizing Filter Made in Germany 82 mm $178.50 Time Remaining: 27d 13h 30m Buy It Now for only: $178.50 |
 Tiffen 52mm UV Ultra Violet Glass Filter 52 mm Made in USA 0 SH $8.94 Time Remaining: 2d 13h 22m Buy It Now for only: $9.95 |
 Genuine Pentax SMC 49mm L39 UV SMC Filter Made In Japan Used $10.03 Time Remaining: 2d 13h 45m Buy It Now for only: $30.13 |
 Tiffen 58mm UV 1 Haze 1 Ultra Violet Glass Filter FS Made in USA $13.99 Time Remaining: 26d 2h 7m Buy It Now for only: $13.99 |
 Heliopan 82mm KR3 ES82 Slim Version Filter Made in Germany $7.00 Time Remaining: 2d 15h 11m |
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Types Of Sediment Filters
Untitled Document
All sediment filters have one thing in common, filtration capability based on micron (µm) size. By definition, a micron is "a metric unit of length equal to one millionth of a meter" which is extremely small to the naked eye. The diameter of a human hair is roughly 25 microns. If a filter is rated to be 5 micron nominal then it means that 80% of pores on that filter are 5 micron and the rest could be larger. If a filter is rated to be 5 micron absolute then 99.9% of the pores are 5 micron and the rest could be larger. All sediment filters lower the water pressure of a given water source. Sediment filters require very little water pressure to operate – about 5 psi.
Spun "Melt blown" Sediment Filters
These types of filters are most economical and are most widely seen on the market. They are noticeable for their hard cotton-like appearance. Typically, these are made of 3-4 different layers and are usually made to have the largest micron on the outer most layers to the smallest micron on the inner most layers. The rating of the filter is based on the smallest micron and most inner layer of that filter. Spun sediment filters are ALWAYS made of polypropylene. Polypropylene is a type of thermoplastic that can be melted and bonded which is how the term "melt blown" came about.
Spun "melt blown" filters are typically described to look like a clean white paint roller. Although they are sometimes slightly pleated (circling the sediment filter). These types of imitated "pleated" filters increase the surface area for water to filter contact which ultimately decreases the amount of water pressure drop (which is good). You will never see rubber gaskets on a sediment filter. Rubber gaskets are used to help separate the product water and the source "feed" water and is seen on EVERY other filter except spun filters. Sediment filters are self sealing when properly used.
Their dirt holding capacity is considered to be better than pleated but worse than string wound filters. Their main purpose is to remove silt, oil, grease, and other forms of sand. It is very commonly used as a general filter to remove more than the above mentioned (i.e. dirt, particulate rust/iron, etc).
The micron rating of a spun filter is ALWAYS rated as nominal and NEVER absolute. You will never see a spun filter with an absolute micron rating because of the way it is made.
Spun filters are an all around average filter which can be used in almost any situation.
String Wound Sediment Filters
String wound filters have the appearance of a spool with yarn. They have a lot in common with spun "melt blown" sediment filters. They both have ONLY a nominal filtration and are ALWAYS made of polypropylene. Much like spun filters these also do not use rubber gaskets to seal the filter.
For dirt, silt and sand situations, it is always recommended to use a string wound sediment filter. These have the largest of the pressure drops as well as the largest of dirt holding capacity. It is very common for people with well water to use these types of filters due to the fact that they have large amounts of dirt/sand/silt in their well.
It is not recommended to use string wound filters for water with high amounts of oils and grease. Because oils attach to the surface of the filter, it will deliberately clog the filter. This will increase the pressure drop until it is completely clogged.
Pleated Sediment Filters
Pleated filters are recognized for their paper thin appearance. Their appearance resembles a well folded piece of paper that is in the shape of a circle. These types only have 1 layer of filtration. It can be made of several types of materials that include cellulose, polypropylene, and polyester – each with its own advantages and disadvantages. They require the use of rubber gaskets to seal properly.Pleated filters have the least amount of pressure drop due to the thickness and most of the time can be washed and reused several times before it is tossed away. The surface area of a pleated filter is much larger than any non-pleated filter.
Polyester pleated filters are used for removing suspended solids from water and are the most durable of the pleated filters because of their material. They are the most resistant to bacterial growth. Polyester filters are constructed of pleated non-woven polyester fabric that is bonded on the ends to thermoset plastisol or "end caps." Polyester is resistant to many chemicals and to bacterial damage, making them an excellent choice for removing suspended solids from non-chlorinated water supplies such as lake and well water.
Polypropylene pleated filters are the most economical filters. They have a higher dirt capacity than polyester filters. Polypropylene construction is excellent chemical compatibility. It is a very good general filter like polyester.
Cellulose pleated filters are also used for removing suspended solids from water. Pleated cellulose is bonded to the end caps of the thermoset plastisol. Cellulose pleated sediment filter are designed for use on chlorinated water supplies such as lakes & rivers.
Both absolute and nominal filters are available because of the way these are made. Absolute micron filters are priced higher than nominal filters because of the production cost. For general filtration, nominal microns are more economical than absolute. Absolute is used in more strenuous situations, for example in laboratories, where micron size plays a very important function.
The main purpose for these types of filters is to remove more solidified particulates like grit, sand, particulate rust and other larger sediment particles. Pleated filters have the least dirt holding capacity when compared to spun and string wound filters. Although they may be used for dirt filtration, they may not perform well for dirt holding capacity.
Pleated filters are recommended for homes that cannot afford the pressure drop but have the presence of sand, grit, or sediment particulates.
About the Author
Our duty is to provide excellent water quality information to health conscious and home improvement do-it-yourselfers. Isopure Water - a WQA member since 2005 and continues to strive for improving water quality.
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