23/30463120 DC

This standard 23/30463120 DC BS EN 17721. Plant biostimulants. Determination of the pH for liquid microbial plant biostimulants/ pH in microbial products. Determination of pH is classified in these ICS categories:

• 65.080 Fertilizers

This document specifies a method for laboratory measurement of the pH value in liquid microbial plant biostimulants, using pH electrodes with a glass membrane. Plant biostimulants other than microbial plant biostimulants are excluded from the scope of this document because there is no essential requirement in the Regulation [1] for measuring the pH of non-microbial plant biostimulants.