Globe Scientific Float Rack for 1.5mL Microcentrifuge Tubes - Square 16-Place or Round 8-Place

Water bath incubation of microcentrifuge tubes requires the tubes to maintain upright orientation in the bath throughout the incubation period — conventional tube racks either sink or tip over in water. Globe Scientific's Float Racks for 1.5mL microcentrifuge tubes are designed specifically to float with a full load of capped tubes, keeping all tube positions above water and tubes upright throughout water bath protocols. The buoyant PP construction ensures the rack remains positively buoyant even at full capacity, and the central molded handle provides a grip point for removing the loaded float rack from the bath without finger contact with individual tubes.

Available in two form factors: the Square 16-Place (456395, 95mm × 95mm, PACK/4 at $46.50) for larger water bath footprints and concurrent tube sets, and the Round 8-Place (456398, 65mm diameter, PACK/4 at $33.30) for smaller bath sections and individual sample set incubation. Both in white PP, autoclavable for decontamination between incubation runs.

Features and Benefits

• Floats with Full Tube Load: The PP rack is designed to remain positively buoyant when fully loaded with capped 1.5mL microcentrifuge tubes — no partial-load limitations or tilting risk when the bath is at working temperature, ensuring all tube positions incubate uniformly throughout the protocol.

• Square and Round Form Factors: Square 16-place (95mm × 95mm) fits standard water bath footprint sections and allows multiple floats to tile across the bath surface; Round 8-place (65mm diameter) fits smaller bath sections and is easier to retrieve from a crowded water bath surface.

• Central Handle for Safe Retrieval: The molded handle in the center of the float rack provides a secure grip point for removing the fully loaded rack from the water bath without touching individual tube caps or bodies — reducing contamination risk and providing a stable grip over hot water.

• PP Construction, Autoclavable: Polypropylene resists water bath temperatures, common lab chemicals, and detergents, and can be autoclaved for decontamination between incubation protocols in shared or sterile-technique water bath workflows.

• PACK/4 for Lab Restocking Efficiency: 4-packs allow labs to maintain a standing float rack inventory without ordering single units, providing per-unit savings for labs that run multiple concurrent water bath incubations simultaneously across several float racks.

Specifications

Laboratory Applications

• Water bath incubation of 1.5mL microcentrifuge tubes in molecular biology, biochemistry, and cell biology protocols requiring timed temperature exposure — enzyme reactions, denaturation steps, hybridization, and equilibration at controlled temperatures from 37°C through 95°C

• Multi-batch concurrent water bath incubations where multiple float racks tile across the water bath surface simultaneously, enabling different sample sets to be incubated side-by-side at the same temperature with color-coded or position-differentiated batch identity

• Viral inactivation, heat-kill, and denaturation protocols at 65–95°C where maintaining tube upright orientation in hot water for defined time intervals requires a purpose-built float rack rather than improvised tube holders or manual positioning

Frequently Asked Questions

What tube size do these float racks hold?
Both the square (456395) and round (456398) float racks are designed for 1.5mL microcentrifuge tubes. They are not designed for 0.5mL or 2.0mL tubes — verify tube OD compatibility before use with non-1.5mL formats.

Will the rack tip over in the water bath?
The racks are designed to float stably with a full load of capped tubes. An unloaded rack or partially filled rack may sit higher in the water. Normal water bath agitation will not cause tipping. Avoid directed water bath jets that may push the rack — position the float rack in a calm area of the bath if agitation is used.

Square vs Round — which should I order?
Square 16-place is better for larger batch incubations and tiles efficiently across flat bath surfaces. Round 8-place fits better in cylindrical water bath sections, handles smaller batch sets, and is easier to retrieve from crowded bath surfaces. Many labs keep both for different protocol scales.

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.