Liquid Neutral De-Ruster - Freiborne Industries, Inc Liquid Neutral De-Ruster - Freiborne Industries, Inc

Product Families: , Freiclean NDR

Freiclean NDR is a pH neutral liquid cleaner designed to safely remove rust from corroded steel substrates.


Freiclean NDR is a pH neutral liquid cleaner designed to safely remove rust from corroded steel substrates. It may be used in a recirculating spray, immersion, and spray wand applications. After rinsing, the de-rusted parts may be immediately treated in a coating process or dried and protected with a corrosion control product.

• pH 6.2 – 7
• Specific Gravity 1.12
• Solvent System Water
• Color Colorless
• Storage considerations Protect From Freezing
• Method of use Spray or immersion
• Concentration 5 – 20 % by volume
• Process Temperature Ambient – 130°F
• Process Time 10 – 20 minutes minimum

Fill the process tank half full with water and add desired volume of FREICLEAN NDR. Fill to final working volume and mix. Heat the solution to operating temperature as desired. It is recommended to initially use Freiclean NDR at 200 gallons per 1000 gallons of process bath.

The concentration of ferrous iron in a FCLNDR cleaning solution can be used to estimate when to dump the bath. Each application will have a ferrous iron level at which the FCLNDR bath will
become ineffective. This level can be identified through experience on the particular line.

Procedure: Measure a 10ml sample into a beaker and add about 15 drops of Testing Solution #44, then titrate with Testing Solution #18 to a pink color that last 20 seconds. Each point (1.0ml) of testing Solution #18 is equivalent to 0.1% iron in Solution.

Processing parameters can vary from application to application. Your Freiborne Sales and Service
Representative will assist you in determining the best processing criteria for your application.

pH meter Test Soln TS20, TS18, TS44 small burette funnels
Pipettes: 10 & 25ml Indicating Soln IS2
Pipette bulb Beaker 125ml
Burettes: (two) 25ml Disposable transfer pipettes “Dropettes”
Burette Stand Refractometer (optional)

FCLNDR is not safe on mild steel equipment. Equipment should be stainless steel or polypropylene. FCLNDR is safe on PE, PP, PVC, CPVC, Kynar, Viton, EPDM and silicone.

Additional Information

Temp Range

Ambient – 120


Carbon Steel, Galvanized Steel, Stainless Steel, Aluminum, Copper/Brass


Process Cleaning, Corrosion Control

Product Type


Product Line



Spray or Immersion

Ordering Information

To place an order, please contact our knowledgeable and professional customer service team:

If you are unable to find what you need or require a custom formula, please call and speak with one of our knowledgeable Formula Engineers. They can walk you through the ordering process quickly and professionally.