In reference to the Expert's Advice from the Technical Working Group (TWG) for the Development of the Philippine National Standards (PNS) for Organic Soil Amendments, during its meeting last March 27, 2017, on the use of processing aids not allowed in the PNS of Organic Soil Amendments (PNS/BAFS 183:2016), particularly those that are 'synthetic', BAFS-Officially Accredited Organic Certifying Bodies (OCBs) shall not accept applications for certification of OSA products that use processing aids not allowed in the PNS for OSA, particularly those that are 'synthetic'.

'Synthetic' is defined in Section 3.6 in the Standard as 'substance that is formulated or manufactured by a chemical process or by a process that chemically changes a substance extracted from naturally occurring plant, animal, or mineral sources, except for those substances created by naturally occurring biological process'. This includes potassium hydroxide (KOH), a strong base use for alkali extraction of humic acids. Solvent extraction using KOH results in the spiking of the total N-P2O5-K2O content of organic soil amendments, exceeding the minimum requirements in the standards.