If you have a question to which you would like an answer, leave us your email address. That way, we can contact you and find a solution together. Thank you for your cooperation!
Thank you, your feedback has reached us. We are dealing with it as soon as possible
an acid-base indicator which is yellow at pH values below 6.8 and red at pH values above 8.0, happe-aluse indikaator, mida kasutatakse tiitrimisel