Indicators element used in cell culture vessel for determining pH value of substance comprises polymeric material and indicator dye

摘要

Indicators element (10, 20, 30) comprises polymeric material (12) and an indicator dye (14), which can be contacted on to-be-tested substance (18, 25), where the indicator dye is contacted with polymer material having fixed shape, so that the to-be-tested substance can be brought into contact with the indicator dye. Independent claims are included for the following: (1) cell culture vessel with indicator element; and (2) method for determining pH value of substance.