For problem-free dispensing of aqueous media and acids as well as solutions subject to crystallization. With solid PTFE-sleeved dispensing piston highly polished 100% corrosion-free. Plastic-coated precision glass cylinder (visible dispensing process). Black-graduated dispensing cylinder. PTFE valve block (no metal springs to contaminate the dispensed liquid). With colour-coded handle inscriptions. Items supplied: Dispenser without reservoir bottle. PTFE suction and discharge tube and two PP bottle adapters (GL40 and GL45). Conformity-certified with precision certificate.