- Condition: Factory New
- Weight: 9.77 lb
- Mark-M glass culture tubes have a 1-3/8 inch vertical permanent ceramic label, fused to the glass, that is easily written on with marker or pencil.
- Labels are located 3/4 inch from the open end.
- Borosilicate glass
- Label color is white.
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Learn more:
- MFR: DWK Life Sciences LLC Ships from MFI Medical
- MPN: 60B12BZW
Frequently asked questions
Does the glass withstand high temperatures?
Yes, these tubes are constructed from premium borosilicate glass. This material is specifically chosen for laboratory use because of its:
- Excellent thermal stability.
- High resistance to chemical corrosion.
- Ability to withstand standard laboratory heating processes.
Is the label surface truly durable?
Absolutely. The 1-3/8 inch marking area is a permanent ceramic label fused directly into the glass. Unlike temporary paper labels, this surface is:
- Scratch-resistant.
- Compatible with standard lab markers or pencils.
- Designed to remain legible through rigorous testing and repeated use.
Will these fit in standard lab equipment?
Yes, the tubes feature a precision-engineered 12 x 75 mm dimension and a consistent round-bottom profile, making them highly compatible with most standard laboratory test tube racks and centrifuges.
Can I reuse these glass test tubes?
Yes, the Kimble Mark-M tubes are designed as reusable laboratory glassware. Their durable borosilicate construction ensures they hold up well to repeated cleaning, sterilization, and chemical exposure.
Where is the ceramic label positioned?
The vertical white ceramic marking area is strategically placed 3/4 of an inch from the open end of the tube. This placement ensures that it is easily accessible for writing while keeping labels clear of common handling areas.
Does the tube come with a closure?
This specific model (60B12BZW) is provided without a closure. It is designed as an open-ended tube, allowing you the flexibility to use your own stoppers, caps, or specialized sealing methods that fit your specific laboratory protocol.
Are these tubes provided as sterile?
These Kimble Mark-M test tubes are supplied as non-sterile. They are intended to be processed, cleaned, or sterilized according to your specific facility’s laboratory standards and safety protocols before use.
How do these compare to standard plastic tubes?
Compared to plastic alternatives, these borosilicate glass tubes offer:
- Higher clarity for easy visual inspection of samples.
- Better thermal performance under heat.
- Superior chemical resistance, ensuring the tube does not degrade or react with your samples.
Is the ceramic label easy to write on?
Yes, the matte-finished ceramic band is specifically engineered to provide a friction-ready surface that easily catches ink from standard laboratory markers or graphite from pencils, preventing smearing and ensuring clear sample identification.
Are these suitable for high-speed centrifugation?
The tubes feature a uniform round-bottom shape and high-quality glass construction suitable for most standard laboratory centrifuges. However, always ensure your centrifuge is balanced and the speed settings are within the structural safety limits for glass laboratory glassware.