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Name of Method or Tool What does it test for?Expected RangeExpected PrecisionHow do you use it?Cost Cost/sample What is the method based on? (ie- a scientific principle, practice, EPA method, etc)How could it be improved?How do we access it or find out more?Research on this (articles, links, etc)Is this method EPA approved? Or approved by another body?other comments - have you used this?
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METALS
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XRF (Portable) all metals depends on the specific metal90-99%http://images.info3.thermoscientific.com/Web/ThermoFisherCAD/%7Bc96d68d8-3419-42e8-b7c6-689afc850d61%7D_TS-eBook-XRF-Technology-in-the-Field.pdfNew: $22,000; Used: ~$8000 Rent: $500/day? can also pay for XRF analysis of your soil samples through a community or university lab. Typically $5-20/sample. x-ray flourescence (spectrometry)https://www.thermofisher.com/us/en/home/industrial/spectroscopy-elemental-isotope-analysis/spectroscopy-elemental-isotope-analysis-learning-center/elemental-analysis-information/xrf-technology.html?ef_id=CjwKCAjw9MuCBhBUEiwAbDZ-7iml1PPAck5Sd2Cjby3BRFXQLHUsefiQH_tO6wM0LuamOKWH5taAEBoCATIQAvD_BwE:G:s&s_kwcid=AL!3652!3!474023584301!b!!g!!%2Bxrf%20%2Bhand%20held&gclid=CjwKCAjw9MuCBhBUEiwAbDZ-7iml1PPAck5Sd2Cjby3BRFXQLHUsefiQH_tO6wM0LuamOKWH5taAEBoCATIQAvD_BwEYes- EPA method 6200
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Open Source Colorimeter lead, nitrate, zinc, sulfate, pH5-150 ppb?http://colorimeter-wiki.iorodeo.com/lead$80?
Colorimetry: Hach LeadTrak Fast Column Extraction Method
https://sites.google.com/iorodeo.com/colorimeter/homehttps://sites.google.com/iorodeo.com/colorimeter/experiments/lab-1?authuser=0
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Lead Soil test kit (reagent based)lead in soil 100ppbadd the reagent to the soil sample in a tube and shake$42 for 5 tests$8
reagents which change color in the prescence of lead
reviewers say it can give false positives and not distinguish between lead and other metals
https://www.carolina.com/catalog/detail.jsp?prodId=181805&s_cid=ppc_gl_products&utm_source=google&utm_medium=cpc&scid=scplp181805&sc_intid=181805&gclid=Cj0KCQjwyoHlBRCNARIsAFjKJ6C6eR3pVoEv59J6BQXgI-Pp4jRMr4iwlIHxBXzevJJ38kVv6Rg6vhAaAms-EALw_wcB not available?No
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Sending sample to a laboratory (or local uni)arsenic, barium, cadmium, chromium, lead, nickel collect soil samples according to a lab's instructions and mail them to the lab$10 - $160Pg. 5 lists labs: https://clf.jhsph.edu/sites/default/files/2019-03/suh-soil-testing-guide-2019.pdf
Varies by lab and specific method used
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ORGANIC CONTAMINANTS
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Hanby Field Test for Petroleum HydrocarbonsPAH's, PCB's, pesticides, diesel and other petrolem productsl PPM to 1000 PPM<-----kits: https://youtu.be/sD3tU_ni5Gs$1295 (includes 15 tests)$15Reagents https://www.hanbytest.com/https://www.hanbytest.com/publications___citationsYes- EPA approved
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EPA brownfield Program for soil testinghttps://www.gardeningonbrownfields.org/soil-testing/
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Clor-N-Soil PCB screening kitPCB50 ppmhttps://www.dexsil.com/writable/documents/product-manuals/Clor.N.Soil.PDF$134 (for 6 kits)Reagentshttps://www.dexsil.com/products/clor-n-soil
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PetroFLAG Analyzer System for TPHTotal petroleum hydrocarbons (TPH)15 -2000 ppmhttps://www.dexsil.com/writable/documents/product-manuals/PETROFLAGManualVer.1.Rev.2.pdf$949 (for 10 tests)Reagentshttps://www.dexsil.com/products/petroflag-test-for-tph-in-soilYes - EPA SW-846 METHOD 9074
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MICROBIAL LIFE
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microBIOMETER10% CVhttps://microbiometer.com/instructions$39 (3 tests starter) $100 (10 test refill) $135 (10 tests starter)Reagentshttps://microbiometer.com/
Colleagues have used it in slightly controlled field settings, and while working with communities in the Amazon, both with positive feedback.
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Soil health testhttps://www.advancingecoag.com/soil-samples-analysis
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Cornell soil health testhttps://soilhealth.cals.cornell.edu/
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PH
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NUTRIENTS
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nitrogen
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phosphorus
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potassium permanganate method"active" carbondepends on dilutionweil et al (2003)
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OTHER resources
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nutrient density
https://ag.umass.edu/news-events/highlights/growing-nutrient-dense-vegetables
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http://bionutrient.org/site/soil-test
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