When tested with an XRF instrument this brass rod (sold for hobby projects – and specifically marketed as being useful for “school projects” – at the local hardware store) had the following readings:
- Arsenic (As): 194 +/- 13 ppm
- Selenium (Se): 1948 +/- 76 ppm
- Zinc (Zn): 37,200 +/- 800 ppm
- Copper (Cu): 77,700 +/- 1,600 ppm
- Bismuth (Bi): 140 +/- 12 ppm
This material was tested for a minimum of 60-seconds for each (repeated) test to make sure to report the most accurate possible reading.
I will update this post with more information shortly, but in the meantime – please read some of the other posts I have written to better understand the test results reported on this website.
As always – thank you for reading and for sharing my posts.
Please let me know if you have any questions.