| GrayStone Exploration Labs, Inc. 15400 W 44th Ave. Suite 21 Golden CO, 80403 |
Contact: Chuck Goudge graystonelabs@yahoo.com
If you are sending samples from out of the United States you will need special
shipping instructions. Call to set up your shipment, 303-278-3252
shipping instructions. Call to set up your shipment, 303-278-3252
General Lab Data
I currently have a data base containing more than 300,000 soil samples analyzed
for iodine and other components. These samples have come from all over the
world including Europe, Asia, Australia, North and South America, even a
number of islands. Much of the data base is from North America and the United
States.
for iodine and other components. These samples have come from all over the
world including Europe, Asia, Australia, North and South America, even a
number of islands. Much of the data base is from North America and the United
States.
Repeatability and Precision
As an analytical chemist I have followed a
consistent regiment of quality assurance. I
repeat nearly 10% of all samples and
include a known soil standard on each set
(31 samples/set). Currently on just more
than 30,000 repeats the average error has
been plus/minus 5-7%. For comparison,
contract labs working for the EPA are
only required to meet a plus or minus 20%
error for EPA analysis. Needless to say
many geochemical exploration labs fail to
meet even this standard. (Click Here for
more info.)
consistent regiment of quality assurance. I
repeat nearly 10% of all samples and
include a known soil standard on each set
(31 samples/set). Currently on just more
than 30,000 repeats the average error has
been plus/minus 5-7%. For comparison,
contract labs working for the EPA are
only required to meet a plus or minus 20%
error for EPA analysis. Needless to say
many geochemical exploration labs fail to
meet even this standard. (Click Here for
more info.)
Chuck Goudge
The average for all of the current 290,000 samples is 2.4 ppm I2, this includes
all background and anomalous samples from all areas.
all background and anomalous samples from all areas.
GrayStone Exploration Labs, Inc.
| General Info |