Measured after dilution to 500 ml with a combination glass elektrode after multiple point calibration (according to DIN 19268) with reference materials for the preparation to standard buffer solutions according to DIN 19266.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.