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Where can I buy Evapo-Rust?

Click here for purchasing information.

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How does Evapo-Rust work?

EVAPO-RUST  works through selective chelation.  This is a process in which a large synthetic molecule forms a bond with metals and holds them in solution.   Most chelating agents bind many different metals.  The active ingredient in EVAPO-RUST  bonds to iron exclusively. It can remove iron from iron oxide, but is too weak to remove iron from steel because the iron is held much more strongly.

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Can I spray it on?

EVAPO-RUST is designed as a dip/soak, not a spray. EVAPO-RUST  only works in the liquid form.  When sprayed on a surface, the water in the solution will evaporate before de-rusting can be completed.  However, if you spray it on a surface and scrub with a brush or pad, it will greatly reduce the amount of scrubbing necessary to remove the rust.

NOTE: Althought Evapo-rust rust remover is designed to be a soak, it can be utilized in certain situations as a spray. Click here to view how a chassis was de-rusted using Evapo-Rust as a spray.

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Do the parts need to be completely clean before immersion?

No, but we highly recommend it.  EVAPO-RUST  has detergents which penetrate oils and dirt.  However, surface contaminants do slow the process.  The soils must be penetrated before EVAPO-RUST  can come in contact with the rust underneath.  Soil residue will also shorten the life of EVAPO-RUST.  Heavy greases and cosmoline should be removed prior to de-rusting.

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What about surfaces too large to soak?

It is possible to use Evapo-Rust to remove rust from some surfaces too large to soak. Saturate a fake chamois or other tightly knit material in Evapo-Rust. Place the saturated material on/around the surface, evenly press to make sure the material is in contact with the surface, then cover with plastic to keep the material from drying out.

NOTE: Althought Evapo-rust rust remover is designed to be a soak, it can be utilized in certain situations as a spray. Click here to view how a chassis was de-rusted using Evapo-Rust as a spray.

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What about bluing and other coatings?

EVAPO-RUST will remove sacrificial oxide coatings and is perfect for removing weapon finishes such as Bluing, Parkerizing, Zinc Phosphate, and Browning.

Anodizing, Cobalt Tungsten Carbide, Powder Coating, Chrome, Nickel, Paint, and most other coatings will not be removed as long as they do not contain oxides. EVAPO-RUST will not harm lead or solder points.

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Are there any metals I should not soak in Evapo-rust?

EVAPO-RUST is not recommended for use on magnesium or magnesium alloys.

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Can I use Evapo-Rust to clean brass, copper, and/or aluminum?

It depends on what you are trying to clean. Evapo-rust will not damage any of these metals and will clean oils and other soils. However, it will not remove corrosion from them. It is designed to remove rust (oxides of IRON).

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How long does Evapo-Rust last?

One gallon of EVAPO-RUST  will remove 1/2 pound of pure, dry rust. That averages removing rust from approximately 300 pounds of moderately rusted steel.  When not in use, it is best to cover (but not airtight) to keep out bugs. If any of the bath evaporates, simply add fresh water.

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How do I know when the Evapo-Rust is spent?

The bath will turn completely black and will not perform. The pH will be approximately 7.2 and the specific gravity will be about 1.08.

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How do I dispose of the spent solution?

If you have not introduced hazardous waste (oil,grease, certain paints, etc.) into the bath, only the iron content of the solution should dictate how it can be disposed.  In most cases, it is sewarable.  It is recommended to check local & federal disposal requirements.

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Some pieces get a black film on them, what is it?

The black is carbon from the steel.  Generally high carbon steel is used in making items that are flexible (e.g. springs, saw blades, etc.).  High carbon steel and tool alloy steel items, when de-rusted, will have a darker appearance.  Much of the carbon can be removed simply by wiping with a cloth.

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