Graduated Glass Centrifuge Tube

The Graduated Glass Centrifuge Tube is a laboratory sample tube used for holding and separating liquid mixtures during centrifugation while providing graduated volume reference. It is intended for supervised chemistry, biology, research, clinical-training, college, and university laboratories where samples require controlled centrifugal separation and visual volume assessment.

Product Description

The STEMAids Graduated Glass Centrifuge Tube is intended for sample preparation and centrifugal separation procedures. During centrifugation, denser suspended material moves toward the bottom of the tube while less-dense liquid remains above, allowing users to separate sediment, precipitate, or cellular material according to the laboratory method.

The graduations provide a visual reference for liquid or sediment volume, subject to the tube’s confirmed calibration specification. The exact STEMAids capacity, graduation interval, glass grade, bottom profile, closure type, dimensions, and maximum centrifugal-force rating are . Related products can be sourced through Laboratory Glassware and General Lab Products.

Key Features

• Designed for centrifugation: Holds compatible samples during centrifugal separation procedures.
• Graduated volume reference: Scale markings allow users to observe liquid or sediment volume according to the confirmed graduation specification.
• Transparent construction: Glass allows direct observation of sample layers, precipitate, and sediment.
• Suitable for sample preparation: Supports routine separation, clarification, and sedimentation workflows.
• Reusable format: May be cleaned and reused when the confirmed glass specification and laboratory procedure permit.
• Compatible with laboratory centrifuges: Use only with a rotor, adapter, speed, and RCF approved for the exact tube specification.
• Critical operating data: Maximum RCF, capacity, graduation interval, and glass grade are .

Technical Specifications

What’s Included in the Kit

• Graduated Glass Centrifuge Tube
• Stopper or cap
• Centrifuge adapter
• Rack or holder
• Additional accessories or instructions

Applications / Uses

• Separating suspended solids from liquid samples.
• Collecting precipitates or sediments after centrifugation.
• Clarifying laboratory samples before further analysis.
• Observing approximate sample or sediment volume from graduations.
• Supporting chemistry, biology, biotechnology, and educational laboratory procedures.
• Preparing samples for downstream analytical or teaching procedures.

How to Use the Graduated Glass Centrifuge Tube

1. Inspect the tube for chips, scratches, cracks, or other damage before use.
2. Add the sample without exceeding the confirmed working capacity.
3. Use the graduations only according to their stated calibration and tolerance.
4. Place the tube in a compatible centrifuge rotor or approved adapter.
5. Balance opposing tubes by mass according to the centrifuge manufacturer’s instructions.
6. Set the centrifuge to an RCF and operating time within the confirmed tube rating.
7. Run the centrifuge and allow the rotor to stop completely before opening.
8. Remove the tube carefully and inspect the separated liquid and sediment layers.

Safety note: Never centrifuge a chipped, cracked, or incorrectly fitted glass tube. Do not assume a maximum RPM or RCF from appearance alone; use only the verified tube rating and a compatible centrifuge rotor or adapter.

Care & Maintenance

• Clean the tube promptly after use using a method compatible with the sample and confirmed glass grade.
• Inspect the tube before every centrifugation cycle because surface damage can reduce mechanical strength.
• Avoid sudden temperature changes unless thermal-shock resistance has been verified.
• Store tubes in a rack or protective holder to prevent rolling, impact, and edge damage.

Why Choose STEMAids

STEMAids supplies laboratory instruments, educational apparatus, science kits, and practical-learning equipment for institutional users. Its current catalogue includes centrifuge-compatible laboratory equipment and general laboratory products for schools, colleges, research laboratories, and other scientific facilities. Buyers can also explore Lab Experiment Practice Kits and the complete STEMAids product catalogue for supporting laboratory equipment.

Frequently Asked Questions

What is a Graduated Glass Centrifuge Tube used for?

A Graduated Glass Centrifuge Tube is used to hold samples during centrifugation so components can be separated according to density while the graduations provide a volume reference.

What do the graduations on a centrifuge tube show?

The scale indicates liquid or sediment volume according to the tube’s calibration design. The exact graduation interval and accuracy of this STEMAids model are .

Can a glass centrifuge tube be reused?

Many laboratory glass centrifuge tubes are reusable, but reuse depends on the confirmed product design, cleaning method, sample compatibility, and absence of physical damage.

What is the maximum centrifuge speed for this tube?

The maximum RCF or RPM for the STEMAids tube is . Do not infer a safe speed from another manufacturer’s tube because centrifugal ratings vary by glass type, wall thickness, geometry, rotor, and adapter.

What glass is the STEMAids Graduated Centrifuge Tube made from?

The product is made from glass, but the exact glass grade is . A borosilicate 3.3 or USP Type I claim should not be made until specifically verified.

Can it be used in school and college laboratories?

Yes. Its scientific function is appropriate for supervised biology, chemistry, and laboratory-training procedures where centrifugation and sample separation are part of the practical method.