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Heavy MetalsUpdated 6 months ago

Here is a current spreadsheet of testing done for 2022 on many items that we carry.


For the most up to date info please check each product page for the individual report.


Download via spreadsheet here: BuildASoil 2022 Heavy Metal Spreadsheet


Sample IDLab NumberDate SampledArsenic (mg/Kg)Cadmium (mg/Kg)Cobalt (mg/Kg)Copper (mg/Kg)Lead (mg/Kg)Mercury (mg/Kg)Molybdenum (mg/Kg)Nickel (mg/Kg)Selenium (mg/Kg)Zinc (mg/Kg)
Oyster Shell FlourFF586253/14/20220.230.40.1714.50.68< 0.22.31.20.012.2
Kelp Meal FF586673/17/20220.181.772.313.82.22< 0.24.792.010.155.1
BuildASoil AminosFF586683/17/20220.030.60.56.81.31< 0.23.321.750.071.02
Alfalfa MealFF586703/17/20220.150.981.4315.52.94< 0.22.82.560.1229.9
Fish Bone MealFF586713/17/20220.081.781.7211.12.97< 0.22.852.490.4884.8
Fish MealFF586723/17/20220.361.911.858.74.5< 0.22.642.330.5180.2
Insect FrassFF586783/18/20220.010.460.6913.40.86< 0.22.22.40.04276
Crustacean MealFF586793/18/20220.113.250.528.90.26< 0.20.922.440.0140.5
Camelina MealFF586803/18/2022< 0.010.380.36.96< 0.01< 0.20.852.780.0155.9
Karanja CakeFF586813/18/20220.040.140.4218.20.64< 0.20.818.50.0147
Neem CakeFF586823/18/2022< 0.010.120.5212.1< 0.01< 0.20.621.480.0150.1
BuildASoil Worm CastingsFF586833/18/20220.020.140.913.471.41< 0.22.53.050.014.39
Gnarly BarleyFF586843/18/20220.010.170.195.94< 0.01< 0.21.441.30.0131
Soybean MealFF586853/18/2022< 0.010.140.0814.20.85< 0.23.66.30.0146.8
Barley StrawFF587173/22/20220.010.06< 0.0116.83.48< 0.20.762.2< 0.0121.5
Beaveria Bassiana PowderFF587183/22/20220.7< 0.010.9413.24.6< 0.20.043.2< 0.013.6
Mycro Apply MycoFF587193/22/20220.041.333.921.13.48< 0.26.735.3< 0.0169
Horticultural AloeFF587203/22/2022< 0.010.01< 0.016.94.48< 0.21.10.92< 0.0120.8
12 Seed Cover Crop BlendFF587213/22/20220.010.04< 0.0118.50.52< 0.21.854.2< 0.0147.5
Coconut Water PowderFF587223/22/2022< 0.01< 0.01< 0.012.9< 0.01< 0.2< 0.010.29< 0.010.08
Potassium Silicate AGSIL16HFF587233/22/2022< 0.01< 0.01< 0.011.70.09< 0.20.110.85< 0.010.11
Wettable SulfurFF587243/22/2022< 0.01< 0.01< 0.019.8< 0.01< 0.2< 0.010.34< 0.010.14
Seaweed ExtractFF587703/25/20220.540.463.610.112.49< 0.26.513.60.135.1
Glacial Rock DustFF587713/25/20220.390.4814.243.58.14< 0.20.740.10.0288.9
Local Colorado BasaltFF587723/25/20220.693.113.71710.65< 0.28.211.70.0171
Diamond K GypsumFF587733/25/20220.030.180.012.63.52< 0.20.010.44< 0.0111.2
Fulvic AcidFF587743/25/20220.140.490.011.94.92< 0.22.22.7< 0.015.5
Humic AcidFF587753/25/20220.680.884.71515.36< 0.25.120.1< 0.0139.4
Bio CharFF587763/25/2022< 0.01< 0.010.2424.38.14< 0.22.33.5< 0.0136.7
PumiceFF587773/25/2022< 0.010.23< 0.014.411.44< 0.20.640.01< 0.018.9
EM5FF587783/25/2022< 0.011.13126.25.96< 0.26.31.90.0110.2
Essential Oil BlendFF587793/25/2022< 0.010.170.113.61.42< 0.21.40.22< 0.015.6
Karanja OilFF587803/25/20220.030.430.292.70.37< 0.21.50.9< 0.015
Neem OilFF587813/25/2022< 0.010.450.22.51.39< 0.20.90.86< 0.013.1
Beaveria Bassiana LiquidFF587823/25/2022< 0.010.250.011.81.14< 0.20.750.33< 0.011.9
Organic MolassesFF587833/25/2022< 0.010.420.374.91.1< 0.21.32.2< 0.016.6
Big 6 MiconutrientsFF589604/8/20220.180.124619912.38< 0.257910.65.13664
CoWoCo VermicompostFF591564/21/20220.433.71

51.3< 0.2



Organic High P Rice BranFF591974/25/20220.110.860.8117.144.78< 0.22.613.230.1459.56
Ultra Clean Commercial SoilFF595945/20/20220.22< 0.010.182.21.65< 0.20.761.820.057.56
Heady Starts Seedling SoilFF595955/20/20220.48< 0.011.076.191.12< 0.221.661.1124.81


Here is a link to a blog report on Heavy Metals:

https://buildasoil.com/blogs/news/heavy-metal-testing-best-practices-living-soil-growers

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