ORA_10_18_20_32_80BB-BA-e-1510 64 Basic safety information4.1 Follow the instructions in the operating manual Carefully read through the operating manual even if you have priorexperience with KERNrefractometers. Every language version includes a non-authoritative translation.The original German document is the definitive version.4.2 Warning Do not let acids come into contact with skin or eyes. If acid comes into contactwith skin, flush with copious amounts of water. Shower if larger areas of skinare affected. If acid comes into contact with eyes, keep the eyelid open and flush the eyewith running lukewarm water from the outer corner to the inner corner. Flusheyes for at least 15 minutes. Then consult a doctor or ophthalmologist imme-diately. Thoroughly clean the refractometer after each use. The refractometer must not be exposed to extreme temperatures, high me-chanical stresses, strong direct sunlight or high humidity. This refractometer is not a toy. Keep out of reach of children. Make sure that you will not be hit by anything else while you are using the re-fractometer, as this could cause serious eye injuries The rubber eyeshade may cause irritation when in prolonged contact with theskin. If this happens, consult your doctor. Do not touch the lenses with your fingers.