In Stock
Float Rack
Low-Density Polypropylene Composition: Precision-molded from specialized, medical-grade polymers that ensure the rack remains perfectly level on the water surface, facilitating consistent sample exposure during sensitive temperature-controlled molecular assays.
Locking Tube Retention Geometry: Features a specialized aperture design that securely grips 1.5mL and 2.0mL microtubes, preventing accidental displacement during water bath agitation while allowing for rapid, one-handed insertion and removal.
$3.78
Quick answer: A float rack is a buoyant laboratory rack that floats on a water bath, holding test tubes or small vials upright and partially submerged for incubation, enzyme reactions or other temperature-controlled procedures.
Many biology and biochemistry procedures require test tubes to sit at a specific, evenly controlled temperature for a set time — for example during enzyme kinetics work, microbiological incubation or serology testing. A float rack makes this practical by carrying multiple tubes on the surface of a water bath, keeping them upright and stable while the surrounding water maintains the required temperature around the lower portion of each tube.
Because the rack floats rather than resting on the base of the bath, it naturally follows the water level and keeps tubes at a consistent depth, which is useful in both still water baths and gently circulating ones.
Technical Specifications
| Parameter | Detail |
|---|---|
| Function | Buoyant rack for floating test tubes in a water bath |
| Orientation | Holds tubes upright, partially submerged |
| Typical use | Incubation, enzyme reactions, serology and water-bath procedures |
| Tube capacity | Sized for standard laboratory test tubes — confirm the exact hole diameter and tube count at enquiry |
Applications
- Water-bath incubation of test tube cultures in microbiology
- Enzyme kinetics and other temperature-dependent biochemistry procedures
- Serology and immunology tube incubation steps
- General temperature-controlled sample holding in a water bath
Care & Handling
- Rinse and dry the rack after use, especially if used with biological samples
- Check for cracked holes that could allow a tube to tip or fall
- Avoid prolonged contact with strong solvents unless chemical compatibility has been confirmed
- Load tubes evenly to keep the rack balanced and stable on the water surface
Why Choose LabEquip
LabEquip supplies water-bath accessories alongside our wider lab glassware range and chemistry lab equipment for schools, colleges and research laboratories across India. For bulk or institutional requirements, contact us and our team will help confirm the right rack for your water bath.
Frequently Asked Questions
What is a float rack used for?
It is used to hold test tubes or small vials upright while they are partially submerged and suspended in a water bath, commonly for incubation, enzyme reactions or serology work.
Does the float rack sink in water?
No, it is designed to be buoyant so that it floats on the surface of a water bath while holding tubes upright and partially submerged.
What tube sizes fit in a float rack?
Float racks are made with holes sized for standard laboratory test tubes; confirm the exact tube diameter this rack accommodates at enquiry.
Can a float rack be used in an incubator water bath?
Yes, float racks are commonly used in water bath incubators to keep tubes at a controlled, even temperature during microbiology and biochemistry procedures.
Is the float rack chemical resistant?
Float racks are generally resistant to water and common aqueous laboratory solutions; check compatibility before use with strong solvents or aggressive chemicals.
Does LabEquip supply float racks for bulk or institutional orders?
Yes. LabEquip supplies float racks to schools, colleges and laboratories across India, including bulk and institutional orders. Contact us for a quotation.
Last Updated: September 2026
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