Lab Services

Salt Bath and Sludge Analysis

Kolene Laboratory banner: a technician in safety glasses pipettes a sample next to a microscope

Proper chemical maintenance of a molten salt bath is essential for consistent results. Our scientists and technicians test bath and sludge samples so you can monitor and maintain your baths.

We analyze samples from Kolene® salt baths used for cleaning and descaling, heat treating, and ferritic nitrocarburizing (FNC). For on-site work such as salt pump-out, recharge, and preventative maintenance inspections, see Field Services.

Available testing†

Wet Chemistry

  • Carbonate / Bicarbonate
  • Cyanide / Cyanate
  • Nitrate / Nitrite, F–, Cl– (Ion Chromatography)
  • Metal Content (ICP-OES)
  • Insolubles

Metallurgical

  • Optical Microscopy
  • Macro & Micro Hardness Testing

Borescope Inspection of Castings

Profilometry (contact and non-contact)

Particle Size Distribution (sieve shake test)

†Some test results may be unavailable when proprietary formulations or trade secrets limit what can be reported. 

Sample shipping procedure · View lab services and pricing (PDF)

Salt & Sludge Sample and Shipping ProcedureDownloadPDF · 63.7 KB · Updated February 12, 2025

Have a salt bath or sludge sample to test? Fill in the sample submission form and send it with your sample, or ask us which tests you need.

Download the sample submission formContact us