Liquid Handling

Burettesand Automatic BurettesVolumetric InstrumentsBurettesand Automatic BurettesGraduation and readingBLAUBRAND ®Schellbach StripeRing marks at major graduations.Reading at point ofcontact of the two tips.SILBERBRANDSchellbach StripeShort marks at major graduations.Reading at point ofcontact of the two tips.SILBERBRANDShort marks at major graduations.Reading at lowest pointof meniscus.SpecificationsBurettes and automatic burettes are always calibrated to deliver (TD, Ex).Waiting times:BLAUBRAND ® – waiting time 30 sec. SILBERBRAND – no waiting timeNote: A waiting time is usually not neccessary if a titration is performed(see DIN EN ISO 385).All BLAUBRAND ® burettes and automatic burettes are supplied with a batchnumber and an accompanying batch certificate in the original packaging. Onrequest, they are also available with an individual certificate, USP individualcertificate or DAkkS calibration certificate (ordering information, page 173).Note!The abbreviation Boro 3.3 represents the internationallydesignated borosilicate glass type 3.3.The needle-valve stopcockPTFE valve spindleOperates smoothly yet is tight, even without lubrication, so there is nogrease residue on the burette. The valve spindle is replaceable.Tight seal without forceA gentle turn is all it takes to close the burette valve.Precision burette tipPrecise drop by drop control. Drop size remains constant– from the first to the last drop. The liquid stream breaksoff precisely and does not creep along the outside edge.196info@brand.de