Globe Scientific Bottle Top Dispenser Telescopic Fill Tube - GBTD-TUBE-TELES | For Diamond SureFlow

When the fill tube in your dispenser is too short for the bottle, it draws air instead of reagent — and when it is too long, it bottoms out and blocks flow entirely. The Globe Scientific Bottle Top Dispenser Telescopic Fill Tube (GBTD-TUBE-TELES) solves both problems with an adjustable-length design that extends or retracts to fit reagent bottles ranging from 170 mm to 300 mm in height. This is the same telescopic fill tube that ships with every new Diamond SureFlow dispenser (both standard and recirculation models), available here as an individual replacement or spare. Over time, fill tubes can become scored, stained, or chemically compromised from prolonged contact with aggressive solvents, and swapping in a clean tube takes only seconds with no tools required. Sized for the 2.5 mL through 60 mL Diamond SureFlow dispensers, this tube ensures the intake point reaches the bottom of the bottle regardless of the container's dimensions, so you draw reagent completely and consistently without air entrainment or leaving unusable dead volume at the bottom of the bottle.

Features and Benefits

• Adjustable Length for 170–300 mm Bottles: The telescoping mechanism lets you match the tube length precisely to your bottle height, ensuring the intake sits at the bottom of the container for maximum reagent draw with minimal dead volume.

• Factory-Original Replacement: Identical to the fill tube included with new Diamond SureFlow dispensers. Manufactured by Globe Scientific to the same dimensional and material specifications for guaranteed fit and function.

• Tool-Free Installation: The fill tube slides directly into the dispenser body. No disassembly, no tools, no impact on piston calibration or valve operation — swap takes seconds.

• Compatible with 2.5 mL – 60 mL Models: Fits Diamond SureFlow dispensers from the GBTD-2.5 / GBTD-R-2.5 up through the GBTD-60 / GBTD-R-60 volume ranges in both standard and recirculation configurations.

• Dedicated Tubes Prevent Cross-Contamination: Labs that dispense chemically incompatible reagents through the same dispenser body can keep separate fill tubes for each reagent class, swapping them when changing chemicals to avoid carryover.

Specifications

Laboratory Applications

• Replacing chemically degraded fill tubes in analytical chemistry labs that dispense organic solvents (acetone, methanol, dichloromethane) which can cloud or stiffen plastic tubing over months of continuous use

• Maintaining dedicated fill tubes for incompatible reagent families — one for acidic solutions, one for basic solutions, one for organic solvents — to prevent trace cross-contamination when the same dispenser body is shared

• Stocking replacement tubes as part of a preventive maintenance program for institutional labs operating multiple SureFlow dispensers, ensuring immediate swap-out capability without ordering delays

Frequently Asked Questions

Does this telescopic fill tube fit the 100 mL Diamond SureFlow dispenser?
This tube is specified for the 2.5 mL through 60 mL models. The 10–100 mL model (GBTD-100 / GBTD-R-100) uses a larger-diameter fill tube due to its higher flow volume. Check with Globe Scientific for the correct replacement tube for the 100 mL unit.

How do I adjust the telescopic fill tube to fit my bottle?
Extend the tube until the lower tip reaches near the bottom of your reagent bottle. The telescoping sections slide freely to allow length adjustment. Once set, the tube holds its position through friction fit inside the dispenser body. No locking mechanism or tools are required.

Will changing the fill tube affect my dispenser's calibration?
No. The fill tube is the intake pathway that draws reagent from the bottle into the dispenser. It is completely separate from the piston and valve mechanism that controls dispensing volume and calibration. Swapping the tube has zero impact on volume accuracy.

Quality Assurance

Globe Scientific products are manufactured under strict ISO 9001:2015 certified quality systems. Designed to meet the demanding requirements of clinical and research laboratories, these products undergo rigorous inspection to ensure consistent performance and reliability.

Academic and Institutional Pricing

LabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.