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Copper Acid

Product information "Copper Acid"

Acid Bright Copper Electrolyte BMG 095.2 – Mirror Finish, Conductivity & Premium Results

The Acid Bright Copper Electrolyte BMG 095.2 is a high-performance plating solution designed for depositing mirror-bright, highly conductive copper layers in bath plating, pen plating, and tampon plating applications.

Its optimized formulation ensures smooth, brilliant and high-gloss copper deposits, making it ideal both as a decorative finish and as a base layer for further coatings such as nickel or gold.

Suitable for beginners and professionals alike, this electrolyte delivers consistent, high-quality results.


Key Benefits at a Glance

  • Mirror-bright, high-gloss copper finishes
  • Excellent electrical conductivity
  • Strong adhesion on metallic substrates
  • Suitable for:
    • Bath electroplating
    • Pen plating
    • Tampon plating
  • Ideal for decorative and technical applications
  • Fast and uniform deposition

Applications

  • Jewelry manufacturing & finishing
  • Decorative high-gloss surfaces
  • PCB and electronics
  • Model making & precision engineering
  • Base layer for gold or nickel plating

Technical Parameters

The following values represent typical operating parameters for acid bright copper electrolytes:

PropertyValue / Range
Electrolyte typeAcid bright copper electrolyte
pH valueapprox. 1
Operating temperature15–50 °C
Voltage (tank plating)0.5–2.5 V (recommended ~1–1.5 V at 10 cm electrode distance)
Voltage (brush / pen plating)1.2–4.5 V (recommended ~3 V)
Current density0.6–5 A/dm² (up to ~7 A/dm² with agitation)
Deposition rateapprox. 1 µm/min at 5 A/dm² and 20 °C
Anode materialCopper or graphite
Suitable substratesCopper, brass, stainless steel, acid-resistant metals
Not suitable without pretreatmentAluminum, chromium, zinc, tin, titanium

Important:
Acid-sensitive metals such as steel, iron or zinc must first be pre-plated with an alkaline copper electrolyte before using this acid copper system.

Application Guide (Beginner to Professional)

1. Surface Preparation (critical for mirror finish)

  1. Thoroughly degrease the workpiece
  2. Activate/pickle for a clean metallic surface
  3. Rinse with distilled water
  4. Do not touch the surface afterwards

2. Bath Plating (for perfect mirror finishes)

  • Fully immerse the workpiece
  • Apply DC current within recommended range
  • Agitation improves brightness and uniformity
  • Plate until desired thickness is achieved

Ideal for uniform, high-gloss coatings


3. Pen Plating (precision bright repair)

  • Apply electrolyte via felt or sponge tip
  • Move evenly across the surface
  • Start with low voltage, increase gradually

 Perfect for localized high-gloss applications


 4. Tampon Plating (controlled bright application)

  • Soak the tampon with electrolyte
  • Apply evenly to the surface
  • Maintain consistent pressure and motion

 Ideal for hard-to-reach areas


 Pro Tips for Maximum Brightness

  • Perfect cleaning = maximum mirror finish
  • Avoid excessive current density → may cause dull areas
  • Agitation significantly improves surface quality
  • Keep solution clean and uncontaminated
  • Maintain stable temperature

Conclusion

The Acid Bright Copper Electrolyte BMG 095.2 is the perfect solution for achieving high-gloss, conductive and visually flawless copper coatings. Whether for decorative or technical use, it delivers reliable, professional-grade results every time.


Practical Application Notes

Surface preparation:

  • Thorough degreasing and cleaning are essential

  • No grease, fingerprints or residues should remain on the surface

Tank plating:

  • Maintain recommended voltage and current density

  • Keep appropriate distance between anode and cathode

Brush / pen plating:

  • Keep the plating pad in constant motion for uniform deposition

Temperature:

  • Can be used at room temperature or heated up to 50 °C for improved deposition behavior


Safety Information

Acid copper electrolytes contain acidic components and copper salts and must be handled carefully:

  • Wear chemical-resistant gloves, safety goggles and protective clothing

  • Avoid contact with skin and eyes

  • In case of contact, rinse immediately with plenty of water

  • Use only in well-ventilated areas

  • Do not inhale vapors or aerosols

  • Do not discharge into drains or the environment

  • Keep out of reach of children

Always observe the Safety Data Sheet (SDS) and applicable hazard labeling.


Scope of Delivery

  • Acid Bright Copper Electrolyte BMG-095.1

  • Quantity according to selection


Saureskupfer
Saureskupfer

H290 May be corrosive to metals. 

H315 Causes skin irritation.

H318 Causes serious eye damage. 

H400 Very toxic to aquatic life. 

H411 Toxic to aquatic life with long-lasting effects. Safety instructions 

P101 If medical advice is needed, have product container or label at hand. 

P102 Keep out of reach of children. 

P273 Avoid release to the environment. 

P280 Wear protective gloves/protective clothing/eye protection/face protection. 

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. 

P310 Immediately call a POISON CENTER/doctor. 

P391 Collect spillage. P501 Dispose of contents/container in accordance with local/national regulations. 

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