General Catalogue

Tube testsMembrane filter setLovibond ® tube tests enable the user to easilyperform highly sensitive and precise water testing.When using tube tests measurement isconsiderably faster and easier, particularly in thecase of standard and serial tests.The tube tests contain a precisely measuredamount of reagent, thereby avoiding the presenceof superfluous chemicals and optimising test safety.Up to six different measuring ranges areavailable for the various tests.The tubes are made of special optical glass with a16 mm in diameter. They are supplied in a storageand dispatch box together with the digestion orauxiliary reagents. This packaging unit contains 24or 25 reaction vials and up to 2 zero vials for photometersystem calibration.Liquid reagentsAs a rule, liquid reagents do not consist of a singlepreparation but comprise several components thatneed to be added to the sample in a certain order.As both the size and the number of drops have adecisive effect on the resultant colour complex,the reagents need to be added with a high degreeof precision.The useful life of liquid reagents is reduced bytemporary contact with oxygen in the air whenthe bottle is opened as well as by unsuitable storageenvironments (presence of sunlight or hightemperatures). Provided that the bottles are storedwithin the temperature range +6°C to +10°C, theLovibond ® DPD and Phenol Red solutions can beused for a period of one year from the productiondate.VARIO Powder PacksThe fast and easy use of VARIO Powder Packs hasmade them extremely popular for water testingapplications in many countries throughout theworld.The Lovibond ® Powder Pack programmeprovides more experienced users with a realalternative to existing measurement systems.The Vario Powder Packs are produced to thesame high quality standards that have madeTintometer's tablet reagents so successful for severaldecades.Parameters from aluminium and chlorine throughto sulphate are just some of the well-known teststhat are included in the VARIO Powder Pack range.Their chemical properties is suitable also for usewith Hach-Photometer-Systems.➲ Detailed information see pages 96 - 103For use when preparing samples for photometricmeasurementsAdvantages• removes turbid materials from samples• differentiates between dissolved and totalsubstances• 0.45 µm mesh meets the requirements ofthe official German unitary procedure forwater testingTo prevent the effects of light scatter, it must beensured that all turbid materials are removedfrom the sample before photometric measurementsare carried out. This can be achieved withthe Lovibond membrane filter set. Where certainmethods are employed (e.g., iron, manganese,CSB, etc.) a membrane filter set must be used todifferentiate samples in terms of dissolved andtotal substances. The filter mesh size of 0.45 µmis in accordance with the official German unitaryprocedure for water testing.Order code: 36 61 50(covers 25 x 0.45 µm membrane filtersand two 20 ml syringes)PhotometryGeneral Catalogue November 201075