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Sulfide Testing
A sulfide test is a good way to tell if the composting process has finished. When the sulfide test shows less than 1ppm then it is safe to apply to your crops if the compost passes all other tests. Click Here for sulfide testing instructions.
$4.99
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$8.99
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$9.99
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$9.99
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$14.99
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$16.99
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SULFIDE Test Kit - Includes HCl, lead acetate strips, plastic cup, measuring spoon, graduated cylinder, petri dishes, & instructions.
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$64.99
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