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Products verified: June 6, 2026
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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.
High Precision and Accuracy: Microlit bottle top dispensers meet ISO 9001, ISO 13485, ISO 17025, and CE standards, offering accuracy better than ISO 8655 in practical lab settings. Reliable performance ensures precise measurements for your experiments.
Autoclavable for Sterility: Microlit bottle top dispensers are fully autoclavable at 121°C and 15 PSI for 10-15 minutes. Detailed autoclaving instructions are included in the user manual for effective sterilization.
Smooth, Jam-Free Dispensing: Featuring a PTFE piston and ETP O-Ring, Microlit dispensers ensure smooth, jam-free operation. The lubrication provided by these components enhances dispensing reliability.
High Chemical Compatibility: With SpringlessValve technology and a PTFE piston, Microlit dispensers are highly compatible with a wide range of chemicals. The design ensures effective use with acids, bases, solvents, and more.
Calibration Certificate Included: Each dispenser is individually calibrated in an ISO 17025 / NABL certified lab and includes a calibration certificate valid for one year. This ensures high accuracy and precision in your lab work.
High Precision and Accuracy: Microlit bottle top dispensers adhere to ISO 9001, ISO 13485, ISO 17025, and CE standards. They provide reliable performance with precision exceeding ISO 8655 standards in practical lab settings.
Autoclavable for Sterility: Fully autoclavable at 121°C and 15 PSI for 10-15 minutes, Microlit bottle top dispensers ensure effective sterilization. Instructions for autoclaving are included in the user manual for your convenience.
Smooth Dispensing: The PTFE piston and ETP O-Ring in Microlit dispensers offer excellent lubrication for smooth dispensing. This design minimizes jams and ensures reliable performance during use.
Chemical Compatibility: Microlit dispensers feature SpringlessValve technology and a PTFE piston, ensuring compatibility with a variety of chemicals including acids, bases, and solvents. The design accommodates a broad range of substances.
Calibration Certificate Included: Each dispenser is calibrated in an ISO 17025 / NABL certified lab and includes a one-year validity calibration certificate. This ensures the accuracy and precision required for accurate lab results.
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...
Multi-Lab Use: Ideal for daily dispensing in chemical, biological, pharmaceutical, food, environmental and educational labs—one tool covers all routine workflows. Backed by a 1-year warranty, our lab products are made by a manufacturer with over...
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...
Various Adapters &Telescoping Filling Tube &Hinged Closure Cap - Various adapters, including the most popular ones such as S40, GL32, GL38, GL25, and GL28, allow the dispensers to be used on medicine bottle of different sizes.; Telescopic, extractable...
Bottle Top Dispenser: Bottletop dispensers allow you to safely dispense a fixed amount of liquid directly from a bottle to a receiving container. Bottle top dispensers help reduce the loss of reagents, save time, and reduce risk.
Large Capacity Design: The 0-25ml capacity range is available to ensure a safe, smooth and accurate dispensing experience with the bottle-top dispenser. It is suitable for most laboratory reagent bottles to meet the experimental needs of different users.
500ml/1000ml Plastic Bottle: Holds 500ml/1000ml of liquid, allowing for easy and efficient dispensing. Its unique design and premium materials make it lightweight, portable, impact-resistant, and unbreakable. It meets the functional needs of various...
Professional: Used for quantitative droplet measurement, which can accurately add droplets to containers for volume analysis, titration, dilution other experimental operations. An instrument used for routine chemical analysis operations in laboratory...
Wide Application: Suitable for resistant to most acids, alkalis, organic solvents, organic and inorganic solvents; suitable for measuring the volume of liquids in analysis and experiments in the pharmaceutical, teaching, chemical and other departments.
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...
Various Adapters &Telescoping Filling Tube &Hinged Closure Cap - Various adapters, including the most popular ones such as S40, GL32, GL38, GL25, and GL28, allow the dispensers to be used on medicine bottle of different sizes.; Telescopic, extractable...
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.
Calibration Certificate Included: Each dispenser is individually calibrated in an ISO 17025/NABL certified lab and includes a 1-year valid calibration certificate, guaranteeing ISO-level accuracy and precision for your lab work.
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...
Multi-Lab Use: Ideal for daily dispensing in chemical, biological, pharmaceutical, food, environmental and educational labs—one tool covers all routine workflows. Backed by a 1-year warranty, our lab products are made by a manufacturer with over...
Last update on 2026-06-06 / 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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