Bio Nil
P2
Bionil P2 Pickling Paste
Weld Stain Cleaning Paste
Brush-applied pickling paste that removes weld discolouration, heat-treatment scale, corrosion and rust stains from stainless steel weld zones.
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Bio Nil
Epinoks P/48 Electropolishing
Electrochemical Polishing and Germ-Free Surface
Bio Nil· P/48
Epinoks P/48 Electropolishing
Electrochemical Polishing and Germ-Free Surface
Epinox is a multi-component electropolishing liquid that, by an electrochemical method, dissolves contamination and metal from the workpiece surface and binds oxygen to the newly formed surface. Electropolishing is an electrochemical process performed to brighten stainless steel surfaces, remove burrs and create a germ-free environment. It cleans and polishes the surface by dissolving all contamination, oxidation, burrs and 15-30 microns of the base metal. A surface smoother and brighter than that obtained by mechanical polishing (Ra ≤ 1 micron) is achieved in a much shorter time. Every point of the surface has the same brightness.
Key Features
- Smoother surface than mechanical polishing
- Results in a much shorter time
- Deburring + polishing + germ-free environment
- Homogeneous brightness (the same at every point)
- New oxygen-binding surface
Application Images
The product in application
Passivation and Electropolishing process catalogue page
Technical Properties
Specifications
| Property | Value |
|---|---|
| Form | Liquid (electrolysis) |
| Surface roughness | Ra ≤ 1 micron |
| Dissolved metal | 15-30 microns |
| Application | With an electrolysis cell |
| Certificate | Germ-free surface creation |
Material Compatibility
AISI 304AISI 316Other stainless steels
Usage Areas
Where is it used?
- Food equipment polishing
- Medical devices (germ-free surface)
- Semiconductor industry
- Precision stainless part finishing
Application Procedure
Step-by-step usage
- 01
Place the part in the electrolysis cell
- 02
Fill the cell with Epinoks P/48 liquid
- 03
Apply current (parameters are set by a specialist)
- 04
After surface inspection, rinse with clean water
Application step01 / 04
01
Place the part in the electrolysis cell
- 01
Place the part in the electrolysis cell
- 02
Fill the cell with Epinoks P/48 liquid
- 03
Apply current (parameters are set by a specialist)
- 04
After surface inspection, rinse with clean water
Hazard ClassificationGHS / CLP — typical reference
Hazard Statements (H)
- H290May be corrosive to metals.
- H314Causes severe skin burns and eye damage.
- H335May cause respiratory irritation.
Precautionary Statements (P)
- P280Wear protective gloves/protective clothing/eye protection/face protection.
- P260Do not breathe mist/vapours/spray.
- P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- P303+P361+P353IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
- P310Immediately call a POISON CENTER or doctor.
The classification above shows typical reference values for acid-based pickling/passivation products. Always refer to the product's current Safety Data Sheet (SDS/MSDS) for binding information; contact us for product-specific classification.
Safety Warnings
- The electrochemical process must be carried out under specialist supervision
- PPE: goggles, gloves, apron
- Follow electrical safety rules
Frequently Asked Questions
About Epinoks P/48 Electropolishing
What is the difference between electropolishing and mechanical polishing?
Mechanical polishing brightens the surface by abrasion, and microbes can harbour in the resulting micro-scratches. Electropolishing, on the other hand, electrochemically dissolves 15-30 microns of the base metal together with burrs, providing a homogeneous, scratch-free and germ-free appearance across the entire surface.
Which stainless steel grades can it be applied to?
It is effective on most stainless alloys, including AISI 304, 316 and other austenitic stainless steels. It is not used on carbon steel or galvanized surfaces; oil and dirt must first be removed with Bionil PF or P3.
How does the surface roughness come down to Ra ≤ 1 micron?
Under electric current, the micro-peaks of the surface dissolve faster while the micro-valleys are relatively preserved. Through this selective dissolution the surface levels out, and a bright, homogeneous finish at the Ra ≤ 1 micron level is achieved.
Which industries require a germ-free surface?
In the food processing, beverage, pharmaceutical, biotechnology, medical device, cosmetics and semiconductor industries, a smooth surface that prevents microbes from harbouring is mandatory. In these industries, electropolishing facilitates GMP and HACCP compliance.
Is passivation needed after electropolishing?
The electropolishing process itself forms a dense chromium oxide passive layer on the surface, so in most applications no additional passivation is required. However, in aggressive environments (seawater, chlorine), reinforcement passivation with Bionil PR can be applied for extra assurance.
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