Laboratory Results

 

To submit your laboratory's results for the current quarter, please visit http://www.naptprogram.org/lab-results/submit.
You will be prompted to log in.

2017 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil
 

 

2016 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil

 

2015 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil

 

2014 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil


2014 Year-End Report (PDF)

 

2013 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil

 

2012 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil 

 

2011 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil 

 

2010 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil

 

2009 Laboratory Results

Q1 Plant Water Soil Environmental Soil
Q2 Plant Water Soil Environmental Soil
Q3 Plant Water Soil Environmental Soil
Q4 Plant Water Soil Environmental Soil
 
This archival data represents the summaries of the results from the quarterly exchanges of the North American Proficiency Testing program of the Soil Science Society of America.  It has been made available to all interested parties for the purpose of continued improvement in precision and bias of analytical results for agricultural soils, plant tissue and water.  The data may be used for further analysis and included in publications (either peer-reviewed or extension) with the following conditions:
·       Recognition must be given that the source of the data is the Soil Science Society of America, and the North American Proficiency Testing Program.
·       The current chair of NAPT and the program coordinator will be listed as co-authors, and as such will have the opportunity to review the paper prior to publication.  Send a final draft of the paper to the current chair and the program coordinator prior to publication.
·       The results must not be used in such a way as to be misleading or defamatory.