Analytical Support to Identify and Resolve Your Metal Finishing Challenges

The fully-staffed analytics laboratory at Coral Chemical Company offers a variety of services for routine service and troubleshooting including:

  • chemical testing on parts
  • process bath analysis to ensure proper system maintenance
  • water analysis
  • analysis of waste water contamination levels
  • finished product defect analysis

Analytical Services Capabilities


Equipment

FTIR Spectrophotometer

Description

Fourier Transform Infrared (FTIR) Spectroscopy is utilized to identify types of chemical bonds in a molecule by producing an infrared absorption spectrum that is a molecular “fingerprint”.

Applications
  • Identification of organic materials
  • Determine quality or consistency of a sample
  • Determine the amount of individual components in a mixture
Customer Benefits
  • Identification of surface contaminants on the paint or substrate

Equipment

FTIR Microscope

Description

The Fourier Transform Infrared (FTIR) Microscope attachment is utilized to identify chemical contaminants by obtaining reflectance or transmittance spectra on visible particles as small as 20 microns.

Applications
  • Used for small samples or samples with surface contamination visible to the naked eye
  • Identification of organic materials
Customer Benefits
  • Identification of surface contaminants on the paint or substrate
  • Magnified images of field failures

Equipment

ICP

Description

The Inductively Coupled Plasma (ICP) technique is capable of measuring stable metallic elements in the periodic table to determine what elements are present in a sample and at what concentrations they are present.

Applications
  • Used to catalog known materials for the comparison and identification of elements in an unknown material
  • Determination of the elements and corresponding concentrations in raw materials, chemical baths and contaminants
Customer Benefits
  • Identification of soils or contaminants on the surface of the substrate
  • Identification of the elements present in solution samples

Equipment

Gas Chromatography / Mass Spectrometer

Description

Gas Chromatography (GC) is used to separate and identify the volatile components of a mixture by evaporating the components and passing the gaseous components through the column to separate and identify the individual components. The Mass Spectrometer is an instrument which can measure the masses and relative concentrations of atoms and molecules. The combination of a mass spectrometer and gas chromatograph is a powerful tool for the detection of trace quantities of compounds.

Applications
  • Determination of compounds present in metal working fluids
  • Determination of compounds present in paint strippers
Customer Benefits
  • Utilized in tracking the chemical effectiveness and bath life of metal working fluids
  • Utilized in tracking the chemical effectiveness and bath life of paint strippers

Equipment

Ion Chromatography

Description

Ion Chromatography measures the concentrations of ionic species by separating them based on their interaction with a resin. Ionic species separate differently depending on species type and size. The retention time of different species determines the ionic concentrations in the sample. Ion chromatographs are able to measure the concentrations of major ion such as fluoride, chloride, nitrate, nitrite and sulfate as well as major cations such as sodium, ammonium, potassium, calcium and magnesium.

Applications
  • Analysis of feed water and rinse water chemistry
  • Analysis of the chlorides, nitrates and fluorides in phosphate baths
  • Analysis of sulfates and chlorides in metal working fluids
Customer Benefits
  • Determine the amount of contaminants present in feed water sources or rinse water baths
  • Determine the amount of vital components and contaminants present in phosphate baths
  • Determine the amount of vital components and contaminants present in metal working fluids

Equipment

Scanning Electron Microscope (SEM) with Energy Dispersive Spectroscopy

Description

The SEM is a microscope that uses electrons instead of light to form an image. The SEM has a large depth of field which allows more of a specimen to be in focus at one time and has a much higher resolution that allows for more control of magnification that produces strikingly clear images. The Energy Dispersive Spectroscopy collects the signals to form a spectra that identifies the elements present in the area of analysis.

Applications
  • Identification of inorganic compounds
  • Determination of surface structures, such as coating formation
Customer Benefits
  • Identification of surface contaminants on the paint or substrate during failure analysis
  • Zinc Phosphate crystal morphology and coating coverage

Equipment

UV Visible Spectrophotometer

Description

The UV Visible Spectrophotometer utilizes a beam of light from a visible and/or UV light source that is passed through the sample and is received by a detector to identify the compounds present. Different compounds have different absorbancies that allow for the identification of the individual compounds.

Applications
  • Determination of phosphate amounts in chemical baths
  • Determination of organic accelerators in phosphate baths
Customer Benefits
  • Determination of phosphate levels in cleaners, iron phosphate and zinc phosphate baths
  • Determination of accelerator levels in iron and zinc phosphate baths

Equipment

Ion Selective Electrodes for Fluoride

Description

Ion Selective Electrodes (ISE) are membrane electrodes that respond selectivity to specific ions that are in the presence of various ions. The membrane is attached to the end of a probe that contains an internal reference electrode and is immersed in the solution of interest to determine the presence of the ion in which the membrane is designed to detect. The most basic and common ISE is a pH probe.

Applications
  • Determine the pH of water or chemical bath samples
  • Determine the amount of fluoride in a solution sample
Customer Benefits
  • Determine the pH of solutions in which the pH is crucial to the proper reactivity of the specific chemical
  • Determine the amount of fluoride present in chemical baths that are formulated to operate with a specific fluoride concentration

Equipment

Potentiometric Titrations

Description

Potentiometric Titration is a volumetric method in which the potential between two electrodes is measured for the determination of specific ions in solution. Potentiometric Titrations are preferred to manual titrations due to increased accuracy and precision.

Applications
  • Determine the amount of chlorides in water or chemical bath samples
Customer Benefits
  • Determine the amount of chlorides in water sources and chemical baths that could lead to the formation of corrosion points on the surface of the processed substrate

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