[Abdullah]

Thanks MarkBroussard
pH is between 4-5. 
Caprylhydroxamic acid is for fungi, what anti bacterial to use with it to make it broad spectrum? 

[Abdullah]

Thanks ngarayeva001. Any preservative which is in ecocert standard or ewg rated 1 or 2?

[Abdullah]

I wanted to purchase Caprylhydroxamic acid, glyceryl caprylate, glycerin from http://www.makingcosmetics.com but they say it is not broad spectrum and preservation is ≤12 months.
Have you used this blend? 
Is it broad spectrum?
Can it preserve for more than a year? 
What is the effect on nonionic surfactant shampoo?