For carrying out germ resistance tests. All papers are made from high-purity cellulose and are free of spores; bacteria and toxic substances that could influence the germination of the seeds. The highly absorbent papers store water for the entire duration of the tests. All germ test papers meet the requirements of ISTA and AOSA. Reliable seed testing. Conductivity 40 mS/m. pH value between 6.0 and 7.5. High absorbance. Roots do not grow through the paper. Papers conform to ISTA recommendations of 2017.