Thank you and please don't misunderstand, I am not concerned about the level of radiation (certainly not with the little I weld). I have been using thoriated tungsten at home with impunity whilst aware of the 'radiation risk'. However, as I bought some lanthanated electrodes I thought it might be in...

Dear Mark, Thank you for the quick response. Now I am home, I just put some 2% Thoriated tungstens on test and they are reading around 10 times background (around 1uS/hr)! I did as you suggested and cleaned the tungstens with solvent and measured them separately to their casing (as I did with the La...

I bought some 2% Lanthanated electrodes recently (the box says Lanthanated and the tips are blue). Out of interest, I tried to measure them with my Gamma Scout Geiger Muller tube and counter. It is not an 'expensive' and accurate scintillator but it can measure Alpha, Beta and Gamma radiation. Inter...

This may not assist in your choice but I was quite interested in all the various types of fillers so prepared a spreadsheet scheduling many of the more common fillers to include their composition. When I started, I also wanted to know how many rods one could buy per kilo so I extrapolated from the c...