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LABORATORY EQUIPMENTS       Products     >> PHYSICS ............................................................   >> CHEMISTRY ............................................................   >> BIOLOGY ............................................................   >> BIOLOGY MODELS ............................................................   >> MICROSCOPES ............................................................   >> PLASTIC LABWARE ............................................................   >> GLASS LABWARE ............................................................   >> PORCELAIN WARE ............................................................     >> LABORATORY EQUIPMENTS ............................................................   >> LABORATORY HARDWARE ............................................................   >> EDUCATIONAL INSTRUMENT ............................................................   >>LABORATORY CHEMICALS QUALITY POLICY MANUFACTURING FACILITIES SOLIDS LABEL SPECIMEN HAZARD SYMBOLS QUALITY ASSURANCE SOLVENTS ............................................................       Item No. DSS 014 DESCO Digital TDS/ CONDUCTIVITY METER We produce only hand held TDS/Conductivity meter for the field applications. It works on 9V DC battery. As we know relation between conductivity & TDS can be expressed as follow: TDS= .63 conductivity (Approx.) We can have a rough idea of hardness also in French degree (0F). Dividing the PPM readings of TDS by 10 gives an approx. value of hardness. Technical Specifications: Range                      : 0-2 PPT                                      2-20 PPT Display                     : 31/2 LCD with Low battery indication Resolution               : .01 % Accuracy                   : ± 1 digit Cell Constant          : Digitally Setable Power Suply            : 9V DC Battery Dimensions            : 170 x 85 x 55 mm Weight                      : 1 Kg approx Table of water Hardness:- PPM (TDS)                   oF (Degree French )            Hardness 0-70                                   0-7                                      Very Soft 70-150                              7-15                                   Soft 150-250                            15-25                                 Slightly Hard 250-350                            25-35                                 Moderate Hard 350-450                            35-45                                 Hard above 450                        above 45                           Very Hard

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