It was observed to increase with increasing temperature, typically <200 ppm at <75 °C whereas for boiling and close to boiling water (90-100 ° C) concentrations up to 700 ppm were observed.
Hlutur kísils jókst með auknu hitastigi, yfirleitt <200 ppm við <75 °C en við suðu og nærri suðumarki (90-100 ° C) mældist styrkur þess allt að 700 ppm.