Category Archives: news

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rows of metal baking sheets

Metals Analysis Method Changes-SW6010D and SW6020B

Category:method updates,news Tags : 

Analytical Resources Inc. is updating metal analysis methods 6010C and 6020A to 6010D and 6020B respectively to be current with the newest version of US EPA Hazardous Waste Test Methods / SW-846. These updates will only affect sample analysis and impose stricter QC (Quality Control) limits and additional QC checks which reflect improving analytical capabilities of the primary instrumentation. Specific changes for each method are briefly described below. 

6010D and 6020B:  The limit for the Initial Calibration Blank (ICB), as well as Method Blanks (MB) has been lowered from the Reporting Limit (RL) to ½ of the RL. Analytes failing the ICB cannot be reported for that analytical run. Analytes failing the MB may be reported with B-flags if associated sample concentrations are greater than 10x the MB, or if client projects do not specify lower limits. 

6010D only:  A mid-level verification standard, prepared at 50% of the linear range for each analyte, must be analyzed daily following calibration and recover within 90 – 110% of the true value. Also, the limit for non-spiked analytes in the interference check solution (IFA) has been lowered from 2x the RL to 1x the RL. Analytes failing these criteria cannot be reported. 

ARI will begin to log samples with the updated 6010D and 6020B methods beginning February 1, 2021.

As we adapt to these changes, it may be necessary to re-analyze or re-prepare samples more frequently than before. However, the result will be more reliable and defensible data for your project. If you have any further questions, please reach out to one of our project managers by calling 206-695-6200 or using our website contact form


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Downtown Seattle

COVID-19 Phased Recovery

Category:news Tags : 

ARI continues to operate under the guidance of Washington States’ phased COVID-19 recovery plan as implemented for King County. The precautions implemented during the Stay Home, Stay Healthy order remain in place, including supporting a remote workforce when possible, requiring physical distancing in the lab, wearing of face coverings for all staff and visitors, and regular deep cleaning of the building.

King County is at Phase 2 as of this post and we will continue to operate normally, accepting samples from 08:00 – 17:00 daily and by appointment on Saturdays.

Please don’t hesitate to reach out to our project management team using our Contact Us page or call 206-695-6200.


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Soil TOC Analyzer

New Technology Highlight-Elementar TOC Cube

Category:news,technology Tags : 

Classic analysis methods for Total Organic Carbon (TOC) required extensive pre-analysis preparation including multiple drying steps, grinding, and acidification. With the purchase of the Elementar TOC Cube Analytical Resources is now able to analyze for TOC, Total Inorganic Carbon (TIC), and Residual Oxidizable Carbon (ROC) without all the time consuming preparation and still improve on reproducibility with faster, unattended, sample throughput.

Sample analysis sizes used in the Elementar TOC Cube are allowed to be on the order of grams which allows for more representative analysis of non-homogeneous sample matrices. True matrix spike samples can be created, as opposed to post-spike samples where the spike is introduced at analysis, providing a more accurate QC measure of the method.

With this investment in instrumentation and training ARI is able to provide higher quality analytical results with a shorter TAT. Contact your project manager directly or use our contact form to learn more about pricing, reporting and control limits, and options for TOC, TIC, and ROC analysis.


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WAC 170-300-0235 Safe Water Sources

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With the adoption of WAC 170-300-0235 on May 27, 2017 all early learning providers in the State of Washington are required to test drinking water supplies for lead and copper every six years with the first test required within six months of the law becoming effective. Analytical Resources provides testing services for both metals and the necessary documentation for regulatory compliance. See our Drinking Water analysis page for details or contact Analytical Resources for more information about sampling, pricing, and turn around time.