Citric Cleaning Solution

Citric Acid Weld Cleaning Solution – Safe, Effective Cleaning & Passivation for Stainless Steel

Capital Weld Cleaners introduces a powerful new addition to its line of weld cleaning electrolytes: the Citric Acid Weld Cleaning Solution—a non-hazardous, high-performance formula designed to clean and passivate stainless steel surfaces using our industry-leading weld cleaning machines. Engineered for both safety and performance, this solution combines effective weld cleaning with the enhanced corrosion resistance of citric acid-based passivation.

Ideal for applications in food and beverage, pharmaceutical, biotech, and clean manufacturing environments, this citric acid solution provides a safer, more sustainable alternative to traditional acid-based cleaners—without sacrificing effectiveness.

Key Features & Benefits:

• Non-Hazardous, Citric Acid-Based Formula
  Developed as a safer alternative to nitric or hydrofluoric acid-based solutions, this formulation is non-toxic, biodegradable, and listed as GRAS (Generally Recognized as Safe) by the FDA.

• Cleans & Passivates in One Step
  Removes weld discoloration, oxidation, and heat tint from stainless steel surfaces while chemically passivating to restore and protect the chromium oxide layer responsible for corrosion resistance.

• Enhanced Surface Protection
  Citric acid selectively removes free iron without depleting the underlying nickel or chromium content. This results in a thicker, more stable passive layer compared to nitric acid treatments, delivering long-term protection from corrosion.

• Optimized for Capital Weld Cleaning Machines
  Designed for seamless use with all Capital Weld Cleaners systems, including the 1X50, 2X80, CW110, and CW200 models. Provides consistent flow characteristics and uniform results in both standard wand and pump gun applications.

• Safe for Operators and Facilities
  Reduced PPE requirements and no hazardous fumes make this solution well-suited for enclosed or regulated environments where acid use is restricted or undesirable.

• Meets Industry Standards
  When used properly, this product complies with ASTM A967 and ASTM A380 standards for the chemical passivation of stainless steel.

Ideal Applications:

• MIG and TIG weld cleaning on stainless steel

• Surface restoration after fabrication or contamination

• Cleanroom and sanitary manufacturing facilities

• Mixed-alloy assemblies or specialty stainless grades

• Food-grade and medical equipment finishing

Application Notes:

For best results, apply using a Capital Weld Cleaners machine and appropriate brush configuration. Follow with Capital Weld Cleaners Neutralizer Solution or Neutralizing Wipes to ensure complete neutralization of any residual solution after cleaning and passivation. Always rinse and dry thoroughly to complete the process.

The Citric Acid Weld Cleaning Solution delivers the power of advanced weld cleaning with the safety and environmental responsibility modern operations demand. Whether you’re maintaining critical process equipment or ensuring a durable finish on stainless steel assemblies, this solution offers professional results without compromise.

Part #’s:

CAP1 – 1 Gallon

CAP25 – 2.5 Gallon

CAP55 – 55 Gallon drum