Bottle-Top Dispenser 5.0-50mL (50mL) (CAT#: STEM-BC-2231-ZJF)

The 5.0-50mL is a manual bottle-top dispenser designed for safe, accurate volumetric dispensing of reagents directly from storage bottles. Liquid-contact components are fabricated from PTFE, FEP, BSG, or polypropylene, providing chemical resistance against most laboratory solvents, acids, and bases. The piston and cylinder mechanism deliver precise volume increments with each stroke, minimizing dispensing variability. All liquid-contact parts can be autoclaved at 121°C for sterile dispensing applications. The unit includes common-size bottle-thread adapters, enabling direct mounting on standard reagent bottle formats. It is available in multiple volume range models covering 0.5 mL to 60 mL per stroke. Tool-free disassembly simplifies cleaning, maintenance, and valve replacement. A back-suction return stroke collects residual liquid from the dispensing tip to prevent dripping. It is suitable for dispensing buffers, acids, bases, organic solvents, and cell culture media. The unit is widely used in analytical chemistry, microbiology, cell culture, and quality control laboratories.

Volume range: 5.0-50mL
Graduation: 1.0mL
Systematic error: ±250μL | ±0.5%
Random error: ±100μL | ±0.2%

PTFE and chemically inert wetted materials for broad solvent compatibility
Autoclavable liquid-contact parts for sterility assurance
Includes common bottle-top adapters for major thread standards
Tool-free disassembly for cleaning and maintenance
Recalibration port for in-place accuracy verification
Compact mounting directly onto reagent bottles

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