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Zn 15% EDTA and Mn 13% EDTA - mixing a stock solution

Simon Cole

Member
Joined
25 Dec 2018
Messages
499
Location
Buckingham
Hello my friends,
I just wanted to check my maths before I order them later today.
e.g. Zn 15% EDTA: 1 g in 1 litre water = 1000 ppm * 0.15 = 150ppm
ergo 6.67g Zn 15% = 1000 ppm l-1

Also, with KNO3, if I want the ppm of N and K separately, then I presume it is: molecular mass/atomic mass * ppm KNO3 = ppm K or N.

Many thanks

@Zeus. Please could you show me where to find the fertiliser calculator that you use?
 

Zeus.

Fertz Calc Meister
Joined
1 Oct 2016
Messages
3,880
Location
Yorkshire,UK
I just wanted to check my maths before I order them later today.
e.g. Zn 15% EDTA: 1 g in 1 litre water = 1000 ppm * 0.15 = 150ppm
ergo 6.67g Zn 15% = 1000 ppm l-1

1590994040056.png

1590994155614.png


So my figures (calculator) match yours :thumbup:

Also, with KNO3, if I want the ppm of N and K separately, then I presume it is: molecular mass/atomic mass * ppm KNO3 = ppm K or N.

V1.9 (not released yet) does give the yield per dose for 'K', 'N' and 'NO3' for KNO3 (and the different element/compound yields for different salts as well)

Download is in my sig or in Fert calculator thread , however I have to admit I hardly recognise it compared to V1.9. V1.8 does have some minor errors and V1.9 more polished and better features.
 
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