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Accurate liquid dispensing is crucial in laboratory settings for reliable results. Bottletop dispensers offer a safe and efficient way to measure and deliver various chemicals. Selecting the appropriate dispenser ensures precision, user safety, and longevity of the equipment, ultimately supporting the integrity of your scientific work.
SAFE, PRECISE, ACCURATE – Our bottle top dispensers can be used to dispense precise amounts of chemicals, reagents, organic and inorganic solvents, oils and more from bottles or other containers. Bottletop dispensers allow you to safely dispense a fixed...
JAM FREE TECHNOLOGY – The ETP O-Ring ensures proper lubrication for the PTFE piston against the glass barrel to ensure a smooth and jam-free dispensing experience. Our dispensers are fully autoclavable at 121° C and 15 PSI for 10-15 mins.
CHEMICAL COMPATIBILITY – Microlit lab bottle dispensers utilize SpringlessValve technology and a PTFE piston. The absence of spring in the valve and the use of inert materials ensures high chemical compatibility with a wide range of acids, bases...
USE WITH CONFIDENCE – Microlit bottle top dispensers are ISO 9001, ISO 13485, ISO 17025, and CE certified. Outperforms ISO 8655 standards (0.6% accuracy) in practical lab environments. A calibration certificate guaranteeing ISO level accuracy and...
Safe & Precise Liquid Control: Safety shut-off valve stops accidental dispensing and leaks; clear digital window displays exact graduations while gear-slot rotating knob delivers smooth, accurate range adjustment for reliable, drip-free performance and...
Universal Fit & Flexible Setup: Includes five common adapters—S40, GL25, GL28, GL32, GL38—plus 20 cm and 30 cm intake tubes to fit any bottle height; tube end safety cap blocks residual liquid from flowing out. Available in five dispensing volume...
Superior Quality: Liquids being dispensed may reach 40 °C, 2.2 g/cm³ density, 500 mm²/s viscosity, and 500 mbar system pressure—well within this unit's certified operating envelope
High Precision and Calibration Certificate Included– They perform better than ISO 8655 standards in practical lab environments，each instrument is individually calibrated and comes with a calibration certificate.Reliable performance ensures precise...
Optimum Chemical Resistance and Better Smooth Movement – glass piston and BSG high borosilicate glass cylinder, anti-corrosion sealing ring and spring-less piston mechanism for high chemical resistance and wider chemical compatibility (a wide range of...
High Precision and Calibration Certificate Included– ONiLAB pump top bottle dispenser are certified under ISO 9001, ISO 13485, ISO 17025, and CE. They perform better than ISO 8655 standards (0.5% accuracy) in practical lab environments，each instrument...
Superior Quality and Sterility - The high-quality materials in all parts conveying medium enable the use within a temperature up to 40 °C, and laboratory dispenser can be steam sterilised at 121 °C under a maximum steam pressure of 1000 mbar and with a...
Intuitive Recirculation System:equipped with a unique comfortable media recirculation system.It offers effortless one-turn venting, ensuring quick and reagent-safe operation. The clear scale markings and locked range block ensure precise and accurate...
Safe & Precise Liquid Control: Safety shut-off valve stops accidental dispensing and leaks; clear digital window displays exact graduations while gear-slot rotating knob delivers smooth, accurate range adjustment for reliable, drip-free performance and...
Universal Fit & Flexible Setup: Includes five common adapters—S40, GL25, GL28, GL32, GL38—plus 20 cm and 30 cm intake tubes to fit any bottle height; tube end safety cap blocks residual liquid from flowing out. Available in five dispensing volume...
Superior Quality: Liquids being dispensed may reach 40 °C, 2.2 g/cm³ density, 500 mm²/s viscosity, and 500 mbar system pressure—well within this unit's certified operating envelope
High Precision and Calibration Certificate Included– They perform better than ISO 8655 standards in practical lab environments，each instrument is individually calibrated and comes with a calibration certificate.Reliable performance ensures precise...
Certified High Precision and Accuracy: Microlit bottle top dispensers exceed ISO 8655 standards with 0.6% accuracy, ensuring reliable performance in practical lab settings. Certified under ISO 9001, ISO 13485, ISO 17025, and CE for added assurance.
Autoclavable for Sterility: These bottle top dispensers are fully autoclavable at 121°C and 15 PSI for 10-15 minutes, ensuring sterility in your lab. Detailed autoclaving instructions are included in the user manual for your convenience.
Smooth, Jam-Free Dispensing: Equipped with a PTFE piston and ETP O-Ring, these dispensers offer a smooth, jam-free experience. The design ensures reliable performance, reducing interruptions during critical lab procedures.
High Chemical Compatibility: Designed with SpringlessValve technology and a PTFE piston, these dispensers are highly compatible with a wide range of chemicals, including acids, bases, solvents, and organics. A complete compatibility chart is provided.
Safe & Precise Liquid Control: Safety shut-off valve stops accidental dispensing and leaks; clear digital window displays exact graduations while gear-slot rotating knob delivers smooth, accurate range adjustment for reliable, drip-free performance and...
Universal Fit & Flexible Setup: Includes five common adapters—S40, GL25, GL28, GL32, GL38—plus 20 cm and 30 cm intake tubes to fit any bottle height; tube end safety cap blocks residual liquid from flowing out. Available in five dispensing volume...
Superior Quality: Liquids being dispensed may reach 40 °C, 2.2 g/cm³ density, 500 mm²/s viscosity, and 500 mbar system pressure—well within this unit's certified operating envelope
High Precision and Calibration Certificate Included– They perform better than ISO 8655 standards in practical lab environments，each instrument is individually calibrated and comes with a calibration certificate.Reliable performance ensures precise...
Autoclave: The entire bottle top dispenser can be sterilized by high-temperature and high-pressure steam at 121 ℃.
Easy Safe to Use: Directly install onto reagent bottles. Smooth piston movement, effortless liquid transfer operation. Manual push‑pull operation for smooth liquid dispensing.The scale is clear and visible, and the range lock is fast, accurate, and...
Chemical Resistant:The liquid only comes into contact with the following chemically resistant materials: borosilicate glass PTFE, PFA, PVDF, ETFE, FEP, Hastelloy alloy, PP. Maximum pressure resistance of 1000mbar, maximum viscosity resistance of 500mm2/s...
Great Compatibility: Comes with multiple thread bottle adapters S40, GL32, GL38, GL25, GL28 to fit most common lab reagent bottles. Easy to take apart for thorough cleaning and autoclave sterilization at 121℃.
Optimum Chemical Resistance and Better Smooth Movement – glass piston and BSG high borosilicate glass cylinder, anti-corrosion sealing ring and spring-less piston mechanism for high chemical resistance and wider chemical compatibility (a wide range of...
High Precision and Calibration Certificate Included– ONiLAB pump top bottle dispenser are certified under ISO 9001, ISO 13485, ISO 17025, and CE. They perform better than ISO 8655 standards (0.5% accuracy) in practical lab environments，each instrument...
Superior Quality and Sterility - The high-quality materials in all parts conveying medium enable the use within a temperature up to 40 °C, and laboratory dispenser can be steam sterilised at 121 °C under a maximum steam pressure of 1000 mbar and with a...
Intuitive Recirculation System:equipped with a unique comfortable media recirculation system.It offers effortless one-turn venting, ensuring quick and reagent-safe operation. The clear scale markings and locked range block ensure precise and accurate...
Optimum Chemical Resistance and Better Smooth Movement – glass piston and BSG high borosilicate glass cylinder, anti-corrosion sealing ring and spring-less piston mechanism for high chemical resistance and wider chemical compatibility (a wide range of...
High Precision and Calibration Certificate Included– ONiLAB pump top bottle dispenser are certified under ISO 9001, ISO 13485, ISO 17025, and CE. They perform better than ISO 8655 standards (0.5% accuracy) in practical lab environments，each instrument...
Superior Quality and Sterility - The high-quality materials in all parts conveying medium enable the use within a temperature up to 40 °C, and laboratory dispenser can be steam sterilised at 121 °C under a maximum steam pressure of 1000 mbar and with a...
Intuitive Recirculation System:equipped with a unique comfortable media recirculation system.It offers effortless one-turn venting, ensuring quick and reagent-safe operation. The clear scale markings and locked range block ensure precise and accurate...
Optimum Chemical Resistance and Better Smooth Movement – glass piston and BSG high borosilicate glass cylinder, anti-corrosion sealing ring and spring-less piston mechanism for high chemical resistance and wider chemical compatibility (a wide range of...
High Precision and Calibration Certificate Included– ONiLAB pump top bottle dispenser are certified under ISO 9001, ISO 13485, ISO 17025, and CE. They perform better than ISO 8655 standards (0.5% accuracy) in practical lab environments，each instrument...
Superior Quality and Sterility - The high-quality materials in all parts conveying medium enable the use within a temperature up to 40 °C, and laboratory dispenser can be steam sterilised at 121 °C under a maximum steam pressure of 1000 mbar and with a...
Intuitive Recirculation System:equipped with a unique comfortable media recirculation system.It offers effortless one-turn venting, ensuring quick and reagent-safe operation. The clear scale markings and locked range block ensure precise and accurate...
Last update on 2026-10-21 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Bottletop Dispensers
Volume Range and Accuracy
Consider the typical volumes you'll be dispensing. Dispensers come with specific volume ranges (e.g., 0.5-5 mL, 10-100 mL). Ensure the chosen range accommodates your most frequent needs. Look for models that specify their accuracy and precision, often expressed as % of error at a given volume. Higher accuracy is vital for sensitive experiments.
Chemical Compatibility and Material
Bottletop dispensers are used with a variety of chemicals, some of which can be corrosive. Check the materials of the dispenser's wetted parts (e.g., piston, valve, tip) to ensure they are compatible with the reagents you will be using. Common materials include glass, PTFE, and various alloys. Incompatible materials can lead to degradation, contamination, and inaccurate dispensing.
Ease of Use and Safety Features
A good dispenser should be comfortable and intuitive to operate. Features like smooth plunger action, adjustable volume settings, and a secure tip ejection mechanism enhance usability. Safety features are paramount. Look for dispensers with built-in safety valves to prevent accidental discharge and designs that minimize aerosol generation, protecting both the user and the environment.
Frequently Asked Questions
What is a bottletop dispenser used for?
A bottletop dispenser is a laboratory instrument designed to accurately measure and dispense variable or fixed volumes of liquid directly from a reagent bottle. They are commonly used for tasks like titrations, reagent preparation, and sample dilutions.
How do I choose the right volume range?
Select a dispenser whose volume range encompasses the majority of dispensing tasks you perform. If you frequently need to dispense both small and large volumes, consider a dispenser with a wide adjustable range or multiple interchangeable dispenser heads.
Are bottletop dispensers safe for all chemicals?
While many dispensers are made from chemically resistant materials, it's essential to verify compatibility with your specific reagents. Corrosive acids, bases, or organic solvents may require dispensers made from specialized materials like PTFE or glass to prevent damage and ensure safety.
How important is the accuracy of a dispenser?
Accuracy is critical for reproducible and reliable experimental results. For sensitive applications like quantitative analysis or precise reagent preparation, a dispenser with high accuracy and precision specifications is essential to minimize errors.
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