What size sample(s) do i need for a spectrographic chemical analysis?
Simple laboratory preparation methods for Spectrographic analysis permit fast 1day turn-around
Spectrographic analysis requires a solid sample with a flat surface able to cover a 3/8" diameter hole.
Sample that will not cover - Spectro arc stand opening
Same sample after forging and grinding can now be tested.
Chips or drillings (minimum 10 grams) can be re-melted using equipment that provides an argon blanket over the crucible to prevent vapor loss during melting.
Chips CAN NOT be run by Spectro (will not cover arc stand)
Chips that have been re-melted and ground smooth can be tested.
Sheet samples that are less then .008" are too thin for Spectro analysis. The 10,000-volt spark "burns through" the material causing an inaccurate analysis. Re-melting can be performed.
Thin sheet displaying Spectro burn that has penetrated material
Sheet has been re-melted and ground smooth - now can be tested.
