Thanks for that update Taray.
Your system is very sensitive to Fe.
Have you tried Iron supplement pills or iron-added cereal food?
I tried calcium pills before but no luck, now with the new experimental arrangement here, I'll do so again to see.
The other day I tried the 1gram of Eu powder again, it was very clear to see, but the hole in the sensor is reduced to only 1mm diameter, so I transferred 25mg of the Eu3O2 powder to another plastic baggie, it also tested just fine. Then I stuck a flat wooden stick into the 25mg powder and tested the tiny amount that stuck to the end (maybe .0.005g at most), and it read fine too.
Geo
