42. General informationAs a result of constant improvements to our products sometimes differences may exist between this manualand the instructions supplied with the instrument.2.1. Safety informationPlease, read carefully this information before installing and using the instrument !Pay attention to all danger and caution statements.2.1.1. Use of hazard informationDANGERIndicates a potentially or imminently hazardous situation that, if not avoided, will result in deathor serious injury.WARNINGIndicates a potentially or imminently hazardous situation that, if not avoided, may result in deathor serious injury.CAUTIONIndicates a potentially hazardous situation that, if not avoided, may result in minor or moderate injury.Important noteIndicates a situation that, if not avoided, could lead to damage to the instrument. Important infor-mation that requires special emphasis.NoteInformation that supplements points in the main text.2.1.2. Precautionary labelsRead all labels and tags attached to the instrument. Personal injury or damage to the instrument could occurif not observed.This symbol references the instruction manual for operation or safety information.Electrical equipment marked with this symbol may not be disposed of in European public disposal systemsafter 12 August of 2005. In conformity with European local and national regulations (EU Directive2002/96/EC), European electrical equipment users must now return old or end-of life equipment to theProducer for disposal at no charge to the user.Note: For return for recycling, please contact the equipment producer or supplier for instructions on howto return end-of-life equipment, producer-supplied electrical accessories, and all auxiliary items for properdisposal.2.2. General informationThe sensION ™+ PH 1 is a portable pH meter. To read the pH value, you will need to connect a pHelectrode (Fig. 3, pg. 7).sensION+ PH1_HACH_LANGE_0710.indd ANG:4sensION+ PH1_HACH_LANGE_0710.indd ANG:4 7/9/10 15:40:317/9/10 15:40:31