430 Dispensers Bottle-Top Dispenser VITLAB® TA2, VITLAB The VITLAB® TA2 dispenser was developed specifically to meet the high purity requirements in trace analysis. By using highly pure materials and employing a special cleaning procedure, well proven in practice, before the application of the dispenser, it is possible to reduce the release of trace metal to the low ppb and for some applications even to the ppt range. The parts that are in contact with media are made of various fluoroplastics (e.g. ETFE, FEP, PFA, PTFE), Al2O3 sapphire, platinum-iridium or tantalum (depending on the version). The outstanding chemical resistance of the materials used makes the new dispenser suitable for applications involving highly concentrated acids and alkalis, such as perchloric acid, acid sulphur, and azotic acid. Choose between two different valve spring systems to match your application: The VITLAB® TA2 with tantalum spring is intended for dosing hydrogen peroxide (H2O2). For applications with sodium hydroxide (max. concentration 30%) and hydrofluoric acid (HF), we recommend the platinum iridium spring. To deep the loss of valuable reagents or sample solutions to a minimum, the dispenser is optionally available with a redosing valve. Included in delivery: VITLAB® TA2 dispenser with adjustable variable volumes, certified compliant according to DIN 12600, with quality certificate, telescoping filling tube, mounting tool, GL 28/S 28 (ETFE), GL 32 (ETFE), and S 40 (PTFE) bottle adapters, and instruction manual. Optionally with or without recirculation valve. Volume ml Valve spring Recirculation Increment ml A P ± % CV P % Order No. 1.0 – 10.0 Pt-Ir no 0,2 0.5 0.1 10 85 37515 1.0 – 10.0 Pt-Ir yes 0,2 0.5 0.1 10 85 37525 1.0 – 10.0 Ta no 0,2 0.5 0.1 10 85 37535 1.0 – 10.0 Ta yes 0,2 0.5 0.1 10 85 37545 Error limits according to DIN EN ISO 8655-5, based on nominal volume (= maximum volume) printed on the instrument if the instrument, the environment and dist. H2O are at the same temperature (20°C). Testing takes place according DIN EN ISO 8655-6 with a completely filled instrument and with uniform and smooth dispensing. Burettes, Titrators, Accessories webcode WW4ZV021 Burettes, Hirschmann Burettes with straight stopcock with glass key joint size12.5, with dated batch identification, class AS, with declaration of conformity acc. to DIN 12600, main point ring graduation, DURAN®, clear glass with Schellbachline, acc. to DIN EN ISO 385, graduation and printing in blue durable ceramic stain. Volume ml Graduation ml Tol. ± ml Flow time s Order No. PU pc/Pack 10 0.02 0.02 35 – 451) 14 79 41256 2 25 0.05 0.03 35 – 451) 14 79 41265 2 50 0.1 0.05 35 – 451) 14 79 41272 2 1) Waiting time 30 s. webcode WW4ZV023 Burettes, Hirschmann Burettes with lateral stopcock with glass key joint size 12.5, with dated batch identification, class AS, with declaration of conformity acc. to DIN 12600, main point ring graduation, DURAN®, clear glass, with Schellbachline, acc. to DIN EN ISO 385, graduation and printing in blue durable ceramic stain. Volume ml Graduation ml Tol. ± ml Flow time s Order No. PU pc/Pack 10 0.02 0.02 35 – 451) 14 79 44256 2 25 0.05 0.03 35 – 451) 14 79 44265 2 50 0.1 0.05 35 – 451) 14 79 44272 2 1) Waiting time 30 s. Volumetry Dosing Devices
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