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Table 3: Results of Group 3 Testing

Table 3 provides the results of Group 3 testing. No significant differences were observed in Group 3 epoxy FTIR spectra. Glass spheres and talc were observed by PLM in FastSteel, Repair Express Epoxy Putty, J-B STIK, PC-METAL, and Leakstopper Steel Epoxy Putty. Talc and calcium magnesium carbonate were observed by PLM in EP-200 Epoxy Putty. Magnesium, silicon, sulfur, calcium, titanium, and iron were detected by XRF in all Group 3 epoxies. In addition, aluminum was weakly detected in all Group 3 epoxies but EP-200 Epoxy Putty. No significant differences were observed in Group 3 pyrograms.

**Group 3 (Opaque Putty/Gray in Color) Results**
	FastSteel	Repair Express Epoxy Putty	J-B STIK	PC-METAL	Leakstopper Steel Epoxy Putty	EP-200 Epoxy Putty
FTIR	No Significant Differences in Spectra
PLM	Glass spheres and Talc					Talc and CaMg(CO₃)₂
XRD	Talc				Talc, Fe	Talc, SiO₂, CaMg(CO₃)₂
XRF	Mg, Al*, Si, S, Ca, Ti, Fe	Mg, Al*, Si, S, Ca, Ti, Fe	Mg, Al*, Si, S, Ca, Ti, Fe	Mg, Al*, Si, S, Ca, Ti, Fe	Mg, Al*, Si, S, Ca, Ti, Fe	Mg, Si, S, Ca, Ti, Fe*
Pyr-GC-MS	No Significant Differences in Pyrograms

*Weak peak

01.03.11

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