Globe Scientific Bottle Top Dispenser Recirculation Tube - GBTD-TUBE-RECIRC | For Diamond SureFlow

A cracked or chemically degraded recirculation tube turns your zero-waste dispenser into a standard one — or worse, a leaking one. The Globe Scientific Bottle Top Dispenser Recirculation Tube (GBTD-TUBE-RECIRC) is the factory replacement for the return tube used in all Diamond SureFlow recirculation-model dispensers (GBTD-R series). This tube forms the closed-loop pathway that routes priming fluid back into the source bottle, and over time repeated exposure to aggressive reagents can degrade it. Having a spare on hand means you can swap in a fresh tube immediately instead of waiting for a replacement order while your recirculating dispenser sits idle or operates in wasteful single-pass mode. Installation is a quick, tool-free process that does not require disassembly of the piston, valve, or calibration mechanism — pull the old tube out, push the new one in, and you are back to zero-waste priming in under a minute.

Features and Benefits

• Factory-Original Replacement Part: Manufactured by Globe Scientific to the same specifications as the recirculation tube included with every new GBTD-R dispenser, ensuring identical fit and flow characteristics.

• Tool-Free Installation: Replacing the recirculation tube requires no tools and no disassembly of the piston, valve, or calibration mechanism. Swap takes less than one minute, minimizing downtime at the dispensing station.

• Restores Zero-Waste Priming: A damaged or degraded recirculation tube forces you to prime in single-pass mode, wasting reagent. A fresh tube restores the closed-loop priming pathway and eliminates that waste.

• Universal GBTD-R Compatibility: Fits all eight volume ranges in the Diamond SureFlow recirculation series, from the GBTD-R-2.5 (0.25–2.5 mL) through the GBTD-R-100 (10–100 mL).

• Stock as a Preventive Spare: Laboratories that dispense corrosive acids, strong bases, or organic solvents through recirculating dispensers should keep at least one spare tube on hand to avoid unplanned downtime when chemical degradation occurs.

Specifications

Laboratory Applications

• Replacing degraded recirculation tubes in chemistry labs that routinely dispense concentrated acids (HCl, H₂SO₄) or organic solvents (acetone, methanol) which can chemically attack tubing over extended use

• Preventive maintenance stocking for institutional labs managing multiple GBTD-R dispensers, ensuring any unit can be returned to full recirculation operation same-day without waiting for a parts order

• Dedicating separate recirculation tubes to specific reagent families (one for acids, one for solvents, one for aqueous buffers) to prevent cross-contamination between incompatible chemical classes

Frequently Asked Questions

Does the GBTD-TUBE-RECIRC fit the standard (non-recirculating) SureFlow dispenser?
No. The recirculation tube is designed exclusively for the GBTD-R recirculating models. Standard GBTD dispensers do not have a recirculation port and cannot be converted to recirculating operation by adding this tube.

How do I know when the recirculation tube needs to be replaced?
Inspect the tube periodically for visible signs of chemical degradation: discoloration, stiffening, cracking, swelling, or a cloudy appearance. If the tube shows any of these signs, or if you notice that priming fluid is leaking rather than returning to the bottle, it is time to install a replacement.

Will replacing the recirculation tube affect my dispenser's calibration?
No. The recirculation tube connects to the dispenser's return port and is completely independent of the piston and valve assembly that controls dispensing volume. Removing and installing a new tube has no effect on calibration.

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.