Name: Diamond SureFlow Bottle Top Dispenser Accessories
SKU: GBTD-ADP
Availability: InStock

<h2 dir="ltr">What Are Bottle Top Dispensers?</h2>
 A bottle top dispenser is a recirculating piston pump that screws onto a reagent supply bottle and dispenses a preset volume of liquid with each plunger stroke. The piston draws liquid up through an inlet valve from the bottle and delivers a fixed volume through a discharge tube on each downstroke; unused liquid is returned to the bottle via a recirculation valve, minimising waste. They replace repetitive pipetting from large reagent bottles, reducing operator exposure, evaporation of volatile solvents, and the risk of contaminating the bulk stock. Volume ranges span 0.2&ndash;100 mL, depending on cylinder size, covering reagent preparation, media dispensing, buffer aliquoting, and acid/base chemistry. Use a bottle top dispenser whenever you dispense the same volume repeatedly from a large bottle &mdash; it reduces operator time, contamination risk, and reagent waste versus manual pipetting.
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<h2 dir="ltr">What you will find:</h2>
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Adjustable volume bottle top dispensers
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Fixed volume liquid dispensers
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Chemical-resistant dispensers for harsh reagents
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Autoclavable bottle top dispensers
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Dispensers with recirculation valves
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High-precision piston-based dispensers
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Dispensers compatible with standard reagent bottles
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Easy-calibration bottle top dispensers
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<h2 dir="ltr"> How to Choose a Bottle Top Dispenser</h2>
 Volume Range: Match Cylinder Size to Application Dispensers are available in six nominal cylinder sizes: 1 mL, 2 mL, 5 mL, 10 mL, 25 mL, 50 mL, and 100 mL. Choose the cylinder size closest to your target dispensing volume; setting a dispenser to 20% of nominal volume introduces greater inaccuracy than setting it to 50&ndash;80% of nominal. The BRAND Dispensette S spans 1&ndash;100 mL across six sizes; Eppendorf Varispenser 2 covers 0.2&ndash;100 mL. Analog vs Digital Volume Setting Analog dispensers use a mechanical, scalloped, or graduated track for volume selection &mdash; simple, battery-free, and reliable for routine dispensing. Digital dispensers display the selected volume on an LCD screen, enabling precise sub-mL volume setting and easy documentation for GLP/GMP compliance contexts. Chemical Compatibility: Material Selection Standard dispensers use polypropylene (PP) valve bodies &mdash; suitable for aqueous buffers, saline, most bases, and many organic solvents. For aggressive acids (HCl, HNO₃, HF) and halogenated solvents, select dispensers with glass cylinders and PTFE or FEP wetted parts. Dispensette S Organic (BRAND) uses a PTFE-coated cylinder and FEP discharge tube for aggressive solvents and acids; Dispensette S Trace Analysis uses borosilicate glass for high-purity acid dispensing. GL 45 Thread Compatibility Most dispensers mount on GL 45-threaded bottles (the standard for Schott Duran, BRAND, and Nalgene reagent bottles). Thread adapters (GL 24&ndash;GL 45) are typically included for compatibility with smaller bottle sizes. Recirculation Valve A recirculation valve returns excess liquid to the supply bottle without re-aspiration, maintaining dispenser prime and reducing waste &mdash; standard on most modern dispensers and required when dispensing volatile reagents. 
<h2 dir="ltr"> Specifications Context</h2>
 Volume accuracy of a well-maintained bottle top dispenser is typically &plusmn;1% of nominal volume at 20&deg;C with distilled water (BRAND Dispensette S specification). ISO 8655 Part 5 defines performance standards for piston-operated burettes; bottle top dispensers that conform to this standard carry a performance certificate. GL 45 thread (DIN EN ISO 4161) is the global standard for reagent bottle neck finish. BRAND Dispensette S and Eppendorf Varispenser 2 remain the dominant bottle top dispenser formats in North American research labs.&nbsp; 
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Precision starts at the source. <a href="https://mbpinc.net/contact-us" style="color: #236fa1;">Connect with the MBP team</a> to find the right dispenser for your lab and request a customized quote.

Bottle Top Dispensers

Diamond SureFlow Bottle Top Dispenser Accessories

The Diamond SureFlow Bottle Top Dispenser Accessories Series by Globe Scientific is the Diamond SureFlow Bottle Top Dispenser Accessories range — bottle adapters in 28mm, 38mm, 40mm, and 45mm thread sizes, compatible with Standard and Recirculating Diamond SureFlow dispensers. Also includes calibration tool (GBTD-CALTOOL), recirculation tube (GBTD-TUBE-RECIRC), and telescopic fill tube (GBTD-TUBE-TELES). Autoclavable. Order from MBP, USA. Available models: GBTD-ADP-28, GBTD-ADP-38, GBTD-ADP-40, GBTD-ADP-45, GBTD-CALTOOL, GBTD-TUBE-RECIRC, GBTD-TUBE-TELES.