What should be done to measure the amount of N P K Ca Mg each separately in solution (PPM)?

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am_al_59
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What should be done to measure the amount of N P K Ca Mg each separately in solution (PPM)?

Post by am_al_59 »

What should be done to measure the amount of N P K Ca Mg each separately in solution (PPM)?
solution is very dark
Error up to 10% is acceptable
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MadelineB
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Re: What should be done to measure the amount of N P K Ca Mg each separately in solution (PPM)?

Post by MadelineB »

You have posted 2 questions with similar topics in separate forums. Please see my reply to your most recent post:

viewtopic.php?f=29&t=17854&p=61023#p61023
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