RE:RE:Products web page...Benedictus,
You're quite right and I'm as much confused as yourself.
One thing you may not have noticed yesterday is that all the 'BAKs' range of products were advertised as 100% 0.3mm granualatuion, and now, this morning the granulation is now in line with that of the K-forte product. 'Silico' has remained at 100% 0.3mm.
Note the website has now gone to two pages.
The 'BAKs' website:
https://www.baks.com.br/
normally shows the potassium per point using a K60 spot price, though at the current R$4.33 per point (R$43.30 per percent) looks a bit high using. However in both cases, BAKs potassium and the K60 (potassium chloride) really refers to K2O (potassium oxide) which is a factor of 0.83:
K or potassium = K2O x 0.83
If you look at the first BAKs product on the website:
https://loja.verde.ag/collections/all?page=1
BAKS 10.29K2O (9.1K2O Kforte/1.2K2O KCl................+ 5% S & 0.2% B...)
I can only deduce that they are actually adding KCl to BAKs as a quick release form of nutrient K potassium.