Technology comparison
Eddy current separation against sensor-based sorting
An eddy current separator throws conductive metal off the belt as a group. A sensor sorter reads each piece and splits that group, or picks out metal the separator missed. In published aluminum lines they work in sequence, not as alternatives: magnets, then the separator, then sensors.
- Aluminum and non-ferrous
- Ferrous
- Fiber
- Glass
- Film
- Other and residue
1Where each one sits
The two machines ask different questions. The separator asks whether a piece conducts electricity well for its weight, and moves every piece that does. A sensor sorter asks what one piece is made of, or whether it holds any metal at all.
STEINERT publishes the order for aluminum. Magnets take out iron. An eddy current separator recovers the non-ferrous metal and lets plastic, wood and glass drop. Sensor sorters then refine the non-ferrous product. Source: STEINERT, Aluminum recycling, undated (source 1).
Sensors also work on what the separator lets fall. STEINERT places its induction sorter after the magnets and the separator to recover the metal still in the residue. STEINERT says one aim can be a residue with under 1% metal, for example where it goes on to fuel production; the other is a metal concentrate such as Zurik, a stainless-rich grade. Binder+Co says its inductive sensors sort Zurik out of eddy current drops: the material that falls off the end of a separator. Sources: STEINERT, Induction sorting system, undated (source 2); Binder+Co, CLARITY metal sorting, undated (source 3).
| Step | What it does | The question it answers |
|---|---|---|
| 1. Magnet | Takes out iron and steel. | Is the piece magnetic? |
| 2. Eddy current separator | Throws conductive non-ferrous metal forward as one product. Non-metals drop off the end of the belt. | Does the piece conduct well for its weight? |
| 3. Sensor sorter on the product | Splits the non-ferrous product: heavy metals and dense pieces out of aluminum, one metal from another, cast from wrought, alloy from alloy. | What is the piece made of? |
| 4. Sensor sorter on the residue | Recovers metal the rotor missed. STEINERT offers image processing to tell stainless steel, cable and circuit boards apart. | Is there metal in the piece? |
Sources: STEINERT, Aluminum recycling, undated, for steps 1 to 3 (source 1); STEINERT, Induction sorting system, undated, for step 4 (source 2). The splits in step 3 are set out in section 4. On MRF container lines a quality-control station may stand in for step 3 (MRF container lines, section 2).
Steel comes out before the separator, for the machine's sake and for the buyer's: Zorba and Zurik must both have passed magnets (section 3). This guide follows the separator makers' manuals: magnets go ahead of the separator, and the separator is not relied on to remove steel. Sources: Industrial Magnetics, manual 900505, undated (source 4); Eriez, RevX-E manual RM-99, 2015 (source 5).
Why steel harms the rotor is in the eddy current reference. Magnet types and placement are in removing ferrous metal before the separator and eddy current against magnetic separation.
On conveyor lines the publisher's affiliate has built for sensor sorters: [at metal recyclers, whether the sorter followed an eddy current separator or replaced one: question for Remcon's shop].
2What each one answers
The separator responds to one property. Throw follows a metal's electrical conductivity divided by its density. On that ratio aluminum scores about 13.7, magnesium 12.5, copper 6.7, zinc 2.4 and common stainless steel 0.18. Source: Goudsmit Magnetics, What determines the separation efficiency of eddy current systems, undated (source 6).
So most conductive metals leave the belt together. Magnesium sits close to aluminum on the ratio, and stainless steel barely responds. Zorba, a grade of ReMA (the Recycled Materials Association) that an eddy current separator can make, is a mix of aluminum, copper, lead, magnesium, stainless steel, nickel, tin and zinc. Sources: Goudsmit, undated (source 6); ReMA, ISRI Specifications, July 2026 (source 7).
A separator can make a rough split between metals. Industrial Magnetics offers a splitter with two vanes that gives two non-ferrous cuts. IFE lists separating conductors from each other, such as copper-lead granules, among its uses, and offers a third splitter cut for stainless steel as an option on some models. Sources: Industrial Magnetics, manual 900505, undated (source 4); IFE, Eddy current separators brochure, 2026 (source 8).
A high-purity split by metal is beyond the rotor. It comes from sensor sorting or from heavy-media separation, which sorts by density in liquid baths. A split by alloy comes from sensors. In heavy-media plants a first bath floats off magnesium and dense plastic; a second floats aluminum while copper, zinc and lead sink. Sources: ReMA, 2026 (source 7); Kelly and Apelian for the Aluminum Association, 2016 (source 9).
| Criterion | Eddy current separator | Sensor sorter |
|---|---|---|
| Separates by | Conductivity relative to density | What its sensor reads: conductivity (induction), density through the piece (X-ray transmission), elements at the surface (XRF, LIBS), colour and shape (cameras) |
| How it acts | Every piece crosses the same field. Conductive pieces are thrown; the rest drop. | Piece by piece: the sensor reads each piece, and ejectors, such as air jets, remove the ones selected. |
| Main targets | Aluminum and other non-ferrous metal, as one product | Stainless steel and cable the separator missed; heavy metals out of aluminum; one metal from another; cast from wrought; alloy families |
| Limits | Cannot tolerate steel, recover stainless steel well, or split one metal from another to high purity | X-ray transmission cannot name alloys. XRF, per a 2016 study, does not read aluminum, silicon or magnesium. Surface sensors can misread painted, dusty or oily pieces. |
| Needs from the feed | Steel removed; one layer; a controlled size range | A screened size band; pieces spread apart; readable surfaces for surface sensors (section 5) |
| Smallest piece, as makers state it | Set by the model; STEINERT states 0.5 mm for its fines separator (more models) | STEINERT states 1 mm for its induction sorter and 5 mm for its XRF sorters; REDWAVE's fine XRF takes 4 to 25 mm |
| Tonnage | Set by belt width and material: one maker's published maximums run from 2 to 20 t/h per metre of width | Per machine, by sensor: up to 30 t/h for X-ray transmission and 35 for colour cameras; about 3 to 8 t/h for XRF and LIBS |
| ReMA grade it helps make | Zorba, along with air separation, flotation, screening and other techniques | Zurik, by induction or X-ray sorting |
| Where it sits | After the magnets | After the separator, on its product or its residue |
Sources: eddy current column, Goudsmit, undated (source 6), Industrial Magnetics, manual 900505, undated (source 4), STEINERT, Non-ferrous metal recycling, undated, for 0.5 mm (source 10) and Bunting, Eddy current separators, undated, for the capacity maximums (source 11). Sensor column: Araujo-Andrade et al., 2021 (source 12) and STEINERT, XSS T EVO 5.0, undated (source 13), for what each sensor reads; STEINERT, Induction sorting system, undated, for stainless steel and cable in the residue, air-jet ejection and 1 mm (source 2); Efe et al., PNNL and Argonne, 2025, for alloys, surfaces and tonnage (source 14); Kelly and Apelian, 2016, for XRF and light elements (source 9); STEINERT, Non-ferrous metal recycling, undated, for 5 mm (source 10); REDWAVE, REDWAVE XRF, undated, for 4 to 25 mm (source 15). Grades: ReMA, July 2026 (source 7). Makers' figures are their own claims. This site has not tested the equipment discussed.
Which one fits your stream: the eddy current reference says when a separator fits, and sensor-based sorting for metals takes each sensor in turn.
Who publishes this. Recyclers Guide is published by [LLC name], an affiliate of Remcon Equipment, Inc. Remcon designs and builds conveyors and eddy current separator systems around rotors or complete separators made by others, builds overhead magnet units, magnetic head pulleys and trommels, resells screens and feeders, and integrates equipment discussed on this site.
3Where the grades draw the line
ReMA's grade definitions show where one machine's work ends and the other's begins. The specifications are a common trading language for scrap; buyer and seller may agree other terms in writing. Source: ReMA, ISRI Specifications, July 2026 (source 7).
| Grade | How it is made | What it is |
|---|---|---|
| Zorba | Eddy current, air separation, flotation, screening, other segregation techniques, or a combination. Must have passed one or more magnets. | Shredded non-ferrous metal, mostly aluminum. Named by its estimated non-ferrous percentage: Zorba 90 is about 90%. May be screened into size ranges. |
| Zurik | Sensor sorting, such as induction or X-ray. Must have passed magnets. | Shredded non-ferrous metal, mostly stainless steel. Sold by its non-ferrous percentage. |
| Twitch | Wet or dry media separation. Must be dry. | Floated aluminum from auto shredders. At most 1% free zinc, 1% free magnesium, 1% iron and 2% non-metallics. |
| Vesper | Separated from Zorba or Twitch. | Wrought aluminum: sheet, extrusion and plate. At most 1% free magnesium, 1% free zinc, 0.5% iron and 1% non-metallics. |
Source: ReMA, ISRI Specifications, July 2026: Zorba, pp. 11 and 17; Twitch and Vesper, p. 11; Zurik, p. 17 (source 7). The iron limits are analytical iron. The full list of aluminum grades is in aluminum scrap grades and what buyers accept.
Zorba and Zurik mark the boundary. An eddy current separator is one of the ways to make the mixed non-ferrous grade; sensors make the stainless-rich one. Both start with magnets.
Twitch is defined by media separation. X-ray transmission makes the same light-from-heavy split dry, by atomic density, so this guide calls an X-ray sorter's light fraction a product comparable to Twitch. Where a maker calls it Twitch, the name is the maker's. Sources: ReMA, 2026 (source 7); Kelly and Apelian for the Aluminum Association, 2016 (source 9); STEINERT, Aluminum recycling, undated (source 1).
Vesper is a wrought product. Sensors can split wrought from cast. X-ray transmission takes out dense, high-alloy cast; for the rest, composition sensors such as LIBS can split cast from wrought, and shape-based cameras have been trialled (section 4). Sources: Efe et al., PNNL and Argonne, 2025 (source 14); STEINERT, Aluminum recycling, undated (source 1).
Routes from Zorba to cleaner aluminum products, by heavy media or by X-ray, are in shredder residue and Zorba.
4Which sensor reads which target
Each sensor reads one property, so the target sets the sensor. XRF reads the X-rays each element gives off at the surface. LIBS fires a laser at the surface and reads the light from the plasma it makes, one point at a time. Sources: Araujo-Andrade et al., 2021 (source 12); Efe et al., PNNL and Argonne, 2025, for the surface (source 14).
X-ray transmission looks through the whole piece. STEINERT says that makes its X-ray sorter insensitive to surface dirt and able to find heavy metal inside an aluminum piece. Source: STEINERT, XSS T EVO 5.0, undated (source 13).
| Sensor | What it reads | Its job after the separator | Limits | Published figures |
|---|---|---|---|---|
| Induction | Whether a piece conducts, and how strongly | Recovers metal the separator missed, such as stainless steel and cable, from its residue | Tells metal from non-metal. To tell stainless steel from cable or circuit board, STEINERT adds image processing. | STEINERT's induction sorter: pieces of 1 to 200 mm, widths of 600 to 3,000 mm |
| X-ray transmission (XRT) | Atomic density, through the whole piece | Takes heavy metals and dense, high-alloy cast out of aluminum, dry | Cannot name alloys. Its wrought product can still hold about 15% cast by weight. | Up to about 30 t/h for cast from wrought (DOE authors) |
| X-ray fluorescence (XRF) | Elements at the surface | Sorts heavy metals by type: copper, brass, zinc, stainless steel | A 2016 study for the Aluminum Association says its signal reflects heavier elements, not aluminum, silicon or magnesium. Paint, dust or oil can cause a wrong reading or none; STEINERT says its belt XRF tells copper from brass or zinc on heavily soiled pieces. | About 3 to 8 t/h, the DOE figure for XRF and LIBS |
| Laser (LIBS) | Elements in a laser plasma, one point at a time | Sorts wrought aluminum by alloy family | Reads a small spot, so it scans; in double-pulse LIBS the first pulse cleans the spot and the second reads it. | About 3 to 8 t/h (DOE authors); STEINERT states up to 11 t/h for its laser sorter |
| Colour camera, with AI | Colour and shape | Splits reddish copper from yellow brass. Shape-based cameras have been trialled on cast against wrought. | Most shredded aluminum looks alike whether cast or wrought, so colour alone does not split them. | Up to 35 t/h (DOE authors); shape-based trials above 85% purity on batches of a few hundred pieces |
Sources: STEINERT, Induction sorting system, undated, for induction (source 2); Efe et al., PNNL and Argonne, 2025, for every DOE figure, cast and wrought, surfaces and colour (source 14); Kelly and Apelian for the Aluminum Association, 2016, for X-ray transmission's density split and XRF's light elements (source 9); STEINERT, Aluminum recycling, undated, for high-alloy cast (source 1); STEINERT, Non-ferrous metal recycling and KSS XF L, undated, for XRF on heavy metals and soiled pieces (source 10); Araujo-Andrade et al., 2021, for LIBS (source 12); STEINERT, PLASMAX, undated, for 11 t/h (source 16); Binder+Co, CLARITY metal sorting, undated, for AI on cast and profiles (source 3). The DOE authors cite earlier work for the 15% figure. DOE figures are given in t/h, as published.
Tonnage against detail
X-ray transmission handles tonnage; XRF and LIBS handle detail. DOE laboratory authors put X-ray transmission at up to 30 t/h for splitting cast from wrought, faster than XRF or LIBS at about 3 to 8 t/h. But it cannot name alloys, and its wrought product can still hold about 15% cast. Source: Efe et al., PNNL and Argonne, 2025 (source 14).
Low-alloy cast is the hard part: colour alone does not split it, as the camera row of the table shows. Source: Efe et al., 2025 (source 14).
STEINERT publishes a higher laser figure than the DOE range. It states up to 11 t/h for its LIBS sorter, while a photo caption on the same page says 3 to 6 t/h. It lists alloy classes 3xxx, 4xxx, 5xxx and 6xxx and claims purity above 95%. Source: STEINERT, PLASMAX LIBS, undated (source 16).
DOE laboratory authors wrote in 2025 that no current sensor method sorts shredded aluminum by individual alloy at commercially viable rates. Read every maker's figure with that date in mind, and ask for a test on your own material. Source: Efe et al., 2025 (source 14).
Each sensor is covered at more length in sensor-based sorting for metals. Metal under about 10 mm is in recovering fine non-ferrous metal.
5What a sensor sorter needs from the feed
A sensor sorter decides piece by piece, so it has to see each piece on its own. The separator needs much the same: one layer, a controlled size range and no steel (eddy current reference).
A screened size band
Spaleck, a screen maker, says LIBS, NIR, XRF and XRT sorters work better on size-graded feed. It suggests a ratio of about 1:3 between the smallest and largest piece in a fraction, fractions such as 10 to 30 or 20 to 60 mm, and taking long pieces out first. Source: Spaleck, 2026 (source 18).
STEINERT's US aluminum page screens Zorba to 10 to 40, 25 to 60 and 60 to 120 mm; its international page gives 10 to 30, 30 to 70 and 70 to 150 mm. Source: STEINERT, Aluminum recycling, undated (source 1). Screens and fractions are covered in screening ahead of separation.
Pieces spread apart
A peer-reviewed review of metal recovery from bottom ash notes that induction sorting needs the material in a thin layer. Spaleck says good screening spreads the material evenly across the sorter's working width. Sources: Šyc et al., 2020 (source 17); Spaleck, 2026 (source 18).
Belt speed, burden depth and the step onto a faster belt on sorter lines are covered in the feed-presentation guide of Remcon Equipment, the publisher's affiliate, which builds conveyors that feed sensor sorters made by others (source 21).
Readable surfaces
Surface sensors need a surface they can read. DOE laboratory authors report that XRF reads only a thin surface layer, so paint, dust or oil can cause a wrong reading or none. X-ray transmission reads through the piece instead (section 4). Source: Efe et al., PNNL and Argonne, 2025 (source 14).
Tonnage per size band
Ask for the tonnage each size band will carry, not only the line total: XRF and laser sorters run at about 3 to 8 t/h each, by the DOE figures in section 4. Source: Efe et al., PNNL and Argonne, 2025 (source 14). The RFQ checklist lists what sensor-sorter makers ask for before they quote.
6How one maker rates the options
The only published side-by-side of non-ferrous sorting methods found for this guide is REDWAVE's own: the table on its metal recycling page, reported below (a second REDWAVE table on its XRF/C page compares XRF, XRT and dense media). REDWAVE makes XRF sorters, including the free-fall machine in the first row. The ratings are REDWAVE's view of its own and competing methods; this guide reports them and does not adopt them. Sources: REDWAVE, Metal recycling, undated (source 19); REDWAVE, REDWAVE XRF and XRF/C Zorba, undated (source 15).
| Method, as REDWAVE names it | REDWAVE's rating |
|---|---|
| REDWAVE XRF/C, its free-fall XRF sorter | Excellent on every task listed, except sorting Twitch by chemistry, which it rates good |
| X-ray transmission | Excellent for splitting Zorba into Twitch and heavies; good for sorting Twitch by chemistry; "No" for sorting heavies, Zurik or stainless steel |
| Dense media | Excellent for splitting Zorba into Twitch and heavies; "No" for every other task |
| Induction | Good only for Zurik into stainless steel |
| Belt-type XRF, coarse fraction only | Good throughout |
| Colour sorters | Average at most |
Source: REDWAVE, Metal recycling, undated, read 2026-10-06 (source 19). The task names are REDWAVE's. Its tasks are splitting Zorba into Twitch and heavies; sorting Twitch into chemistries; sorting heavies into mixed red metals, mixed white metals, zinc, copper, brass and stainless steel; cleaning Zurik into stainless steel; and sorting stainless steel grades such as 304 and 316. "Twitch" here is REDWAVE's usage, not ReMA's definition (section 3).
REDWAVE also claims its free-fall XRF recovers up to 10% more aluminum than X-ray transmission. That is one maker's claim about a competing method, and this guide has not tested either. Source: REDWAVE, REDWAVE XRF, undated (source 15).
The table rates sorting methods, not eddy current separation. Its tasks start from products such as Zorba, which ReMA defines as material that has passed magnets and been made by eddy current or other processes (section 3).
7Cans with plastic sleeves
Plastic sleeves may lower a can's response to the separator, and a PET sleeve may lead an optical sorter to read the can as PET; aluminum recovery on MRF container lines covers it. Source: Aluminum Association, Four Keys to Circular Recycling: An Aluminum Container Design Guide, 2020 (source 20).
8Questions
Does a sensor sorter replace an eddy current separator?
Not in the published lines read for this guide. STEINERT's aluminum sequence runs magnets, then the eddy current separator, then sensor sorters that refine its product, and STEINERT places its induction sorter on the separator's residue. The separator throws conductive metal as a group; a sensor sorter splits that group, or finds metal the rotor missed, by what its sensor reads. Sources: STEINERT, Aluminum recycling, undated; STEINERT, Induction sorting system, undated.
Can an eddy current separator split aluminum from copper?
Only roughly. Throw follows conductivity divided by density, about 13.7 for aluminum and 6.7 for copper, so aluminum is thrown farther. Industrial Magnetics offers a two-vane splitter that gives two non-ferrous cuts, and IFE lists separating conductors from each other, such as copper-lead granules, among its uses. A high-purity split by metal comes from sensor sorting or heavy-media separation, and a split by alloy from sensor sorting. Sources: Goudsmit, What determines the separation efficiency of eddy current systems, undated; Industrial Magnetics, manual 900505, undated; IFE, Eddy current separators brochure, 2026; Kelly and Apelian for the Aluminum Association, 2016.
What is the difference between Zorba and Zurik?
Both are ReMA grades of shredded non-ferrous metal that must have passed magnets. Zorba, mostly aluminum, is made by eddy current, air separation, flotation, screening, other segregation techniques or a combination, and is named by its estimated non-ferrous percentage, as in Zorba 90. Zurik, mostly stainless steel, is made by sensor sorting, such as induction or X-ray. Source: ReMA, ISRI Specifications, July 2026.
How do X-ray transmission and laser (LIBS) sorting differ?
X-ray transmission (XRT) reads density through the whole piece. DOE laboratory authors put it at up to 30 t/h for splitting cast from wrought, but it cannot name alloys, and its wrought product can still hold about 15% cast. The same authors say LIBS and XRF read composition, so they can sort by alloy, but at about 3 to 8 t/h, and both read the surface. Sources: Efe et al., PNNL and Argonne, 2025; Araujo-Andrade et al., 2021.
What does a sensor sorter need from its feed?
Pieces in a screened size band, spread in a thin, even layer, and for surface sensors a readable surface. Spaleck, a screen maker, suggests a ratio of about 1:3 between the smallest and largest piece in a fraction. A peer-reviewed review notes that induction sorting needs a thin layer, and DOE laboratory authors report that paint, dust or oil can cause XRF to misread a piece. Sources: Spaleck, 2026; Šyc et al., 2020; Efe et al., PNNL and Argonne, 2025.
9Sources
Figures from these sources are paraphrased, not quoted. Manufacturers' pages and manuals state each maker's own claims.
- STEINERT. Aluminum recycling (application page, US and international versions). Undated. Manufacturer. steinertglobal.com, aluminum recycling (US); steinertglobal.com, aluminium recycling. Read 2026-10-06.
- STEINERT. Induction sorting system (ISS). Undated. Manufacturer. steinertglobal.com, induction sorting system. Read 2026-10-06.
- Binder+Co. CLARITY metal sorting. Undated. Manufacturer. binder-co.com, metal sorting. Read 2026-10-06.
- Industrial Magnetics, Inc. Eddy current separator service manual 900505. Undated. Manufacturer. magnetics.com, manual 900505 (PDF). Read 2026-10-06. Industrial Magnetics supplies eddy current separators and magnets to Remcon Equipment, the publisher's affiliate.
- Eriez. RevX-E eddy current separator, manual RM-99. April 2015. Manufacturer. eriez.com, RM-99 (PDF). Read 2026-10-06.
- Goudsmit Magnetics. What determines the separation efficiency of eddy current systems (knowledge base). Undated. Manufacturer. goudsmitmagnetics.com, efficiency of eddy current separators. Read 2026-10-06.
- Recycled Materials Association (ReMA). ReMA's ISRI Specifications, July 2026 edition: Zorba, pp. 11 and 17; Twitch and Vesper, p. 11; Zurik, p. 17. Trade specification. isrispecs.org (PDF). Read 2026-10-06.
- IFE Aufbereitungstechnik. Eddy current separators (brochure). March 2026. Manufacturer. ife-bulk.com (PDF). Read 2026-10-06.
- Kelly, S., and Apelian, D. (Worcester Polytechnic Institute), for the Aluminum Association. Automotive Aluminum Recycling at End of Life: A Grave-to-Gate Analysis. 2016. Industry association, commissioned academic study. aluminum.org (PDF). Read 2026-10-06.
- STEINERT. Non-ferrous metal recycling (application page) and KSS XF L (product page). Undated. Manufacturer. steinertglobal.com, non-ferrous metal recycling; steinertglobal.com, KSS XF L. Read 2026-10-06.
- Bunting. Eddy current separators (product page, capacity table). Undated. Manufacturer. buntingmagnetics.com, eddy current separators. Read 2026-10-06.
- Araujo-Andrade, C., et al. Review on the photonic techniques suitable for automatic monitoring of the composition of multi-materials wastes (title shortened). Waste Management and Research, 2021. Peer-reviewed review. Europe PMC full text. Read 2026-10-06.
- STEINERT. XSS T EVO 5.0 (X-ray transmission sorter). Undated. Manufacturer. steinertglobal.com, XSS T EVO 5.0. Read 2026-10-06.
- Efe, M., et al. (PNNL and Argonne National Laboratory, for the US Department of Energy). Alloy selective optical sorting of mixed post-consumer aluminum scrap streams. Resources, Conservation and Recycling 223, 2025 (accepted manuscript). Government; peer-reviewed. OSTI record 3021470. Read 2026-10-06.
- REDWAVE. REDWAVE XRF and its XRF/C Zorba page. Undated. Manufacturer. redwave.com, REDWAVE XRF; redwave.com, XRF/C Zorba. Read 2026-10-06.
- STEINERT. PLASMAX LIBS. Undated. Manufacturer. steinertglobal.com, PLASMAX. Read 2026-10-06.
- Šyc, M., et al. Metal recovery from incineration bottom ash: state-of-the-art and recent developments. Journal of Hazardous Materials 393, 2020 (postprint). Peer-reviewed. cris.unibo.it (PDF). Read 2026-10-06.
- Spaleck. LIBS, XRT, NIR and more: why modern sorters love good screening machines. June 2, 2026, updated July 17, 2026. Manufacturer of screens; its own guidance. spaleck.eu, screening for sensor sorters. Read 2026-10-06.
- REDWAVE. Metal recycling (solutions page, with REDWAVE's comparison table). Undated. Manufacturer; a self-assessment. redwave.com, metal recycling. Read 2026-10-06.
- Aluminum Association. Four Keys to Circular Recycling: An Aluminum Container Design Guide. September 2020. Industry association. aluminum.org (PDF). Read 2026-10-06.
- Remcon Equipment, Inc., the publisher's affiliate. Its guide to feed presentation for MRF sorters, linked in section 5. Affiliate's own site. remconequipment.com, feed-presentation guide. Read 2026-10-06.
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