WSDA Protocol - for Soil, Compost & Fertilizer
WSDA Heavy Metals Test for Solids and Liquids
The Washington State Department of Agriculture (WSDA) mandates testing for specific heavy metals to ensure the safety and compliance of fertilizers, soil amendments, and related products. Our WSDA Heavy Metals Test adheres to these stringent regulatory requirements, providing precise results through EPA-approved methods.
| Arsenic | Cobalt | Lead | Molybdenum | Selenium |
| Cadmium | Copper | Mercury | Nickel | Zinc |
Testing Methods:
- Digestion (EPA 3010) and Detection (EPA 6020): Used for most heavy metals, ensuring reliable and accurate results.
- Mercury Analysis:
- Includes the EPA 6020 method for detection.
- The EPA 7471 CVAA method is used for mercury analysis, as required by WSDA.
Sample Submission:
- Minimum Sample Size Required:
- Solids: 2-3 cups
- Liquids: 10 ounces
- Turnaround Time: Results available within 7 business days.
Important Submission Note:
- Include the WSDA Heavy Metals Test Requirements Guide with your sample to ensure proper documentation. Access the guide here: WSDA Heavy Metals Test Requirements Guide.
Why Choose This Test?
- Regulatory Compliance: Ensure your products meet WSDA heavy metal standards for fertilizers and soil amendments.
- Accurate and Reliable: Tested using advanced EPA-approved methods for precise results.
- Confidence in Quality: Provide buyers and regulators with verified data to demonstrate compliance and product safety.
Order your WSDA Heavy Metals Test for Solids and Liquids today to meet Washington State’s rigorous standards and maintain your product’s marketability!
Frequently Asked Questions
- What are your business hours?
Our office is open Monday thru Friday from 8 am to 5 pm. We do close for major holidays, so we recommend ordering your testing and sending your sample early if a holiday is coming up. You can always reach us by email. Just send us a message at info@tpslab.com
- When will I get my results?
We understand that you need your results as soon as possible. That is why we make sure to begin processing your samples as soon as they arrive at our laboratory. When the results are ready, we will email them to the email address you provided on your submittal form. The list below will give you an idea of our usual turnaround times.
Soil Tests: 5-7 Business days
Water Tests: 5 - 7 Business days
Plants Tests: 24 - 48 Hours
Compost Tests: 7 - 14 Business days
Fertilizer Tests: 3 - 5 Business days
Heavy Metals Test: 7 - 14 Business days
We offer a rush option for an additional 50% of the testing cost, but we would encourage you to give yourself time to test before you get to a point where a rush is needed.
