VWR® Bottle Top Dispensers from the Dispensette® S range (BRAND®) offer precise, repeatable, and contamination-free dispensing of acids, bases, buffers, and solvents directly from reagent bottles. Built on half a century of BRAND® bottletop dispenser expertise, the Dispensette® S features a floating piston design with very low operating forces, a new safety discharge system, and an improved sealing system that eliminates sealing washers for outstanding reliability. Volume adjustment is quick and accurate using an analogue sliding pointer or digital mechanism. Available in standard (PP/glass/PTFE) or organic solvent-resistant versions. A Trace Analysis variant using only PTFE, ETFE, PCTFE, FEP, PFA, and sapphire ball valves is available for high-purity reagent dispensing. Optional recirculation valve enables easy priming. Supplied with DE-M marking, performance certificate, telescopic filling tube, and PP adapters.