Technical Data and Questions > Gas Chromatograph Test

Gas Chromatograph Test

• Bronz-Glow Coil Coat & Husky Green Fin Coil Protector

• Testing for evidence of solvents in the finished coatings
  

The above captioned test was performed on Bronz-Glow Coil Coat and Husky Green Fin Coil Protector by an independent laboratory. Test method used is as follows:

I. PREPARATION

Three airtight containers were used. Each was pre-cleaned with an alkaline cleaner followed by a water rinse, then followed by an isopropyl alcohol rinse and allowed to dry to ensure no residue was present. Container “A” was sealed with no contents (“CONTROL A”)

Into container “B” was placed a sample of aluminum fin stock coated with Bronz-Glow Coil Coat, a multiple step coating process, using a proprietary Polyelastomer, dip processed coating. Container “B” was sealed (“SAMPLE B”)

Into container “C” was placed a sample of aluminum fin stock coated with Bronz-Glow Husky Green Fin Coil Protector. This is a basic three step coating process, using a proprietary Polyelastomer, applied by aerosol spray. Container “C” was sealed (“SAMPLE C”)

In addition, a fourth sample was taken of air including a trace of perchloroethylene.
Container “D” was sealed (“CONTROL D”)

II. PROCEDURE

Each sealed container was stored at 48.89° C (120° F) for ten minutes to accelerate the evaporation of any remaining solvents.

Each container was removed, and a one microlitre (1ul) syringe inserted, drawing a sample of the air from within. The air sample was then injected into a gas chromatograph.

Test conditions were at 110° C (230° F) for 10 minutes, using a 0.53 mm capillary column with a flame ionization detector. Detector limits are less than one part per million (ppm), which is less than the TLV (Threshold Limit Volume) for any of the solvents involved.

II. TEST RESULTS

Sample B – No evidence of any residual solvent vapors
Sample C – No evidence of any residual solvent vapors

Control A – (Clean air sample) No evidence of any residual solvent vapors
Control D – (Contaminated air sample) Evidence of solvent at the 1.60 minute mark.

III. SUMMARY

Though solvents are present in the liquid state of the Bronz-Glow Coil Coat & Green Fin Protector there is no evidence of solvent residual or entrapment in the coil coatings once cured.