Microcentrifuge Tubes are small, clear plastic containers with caps used to store and centrifuge small volumes of liquid. They are commonly found in molecular biology and chemistry laboratories.

The most popular tube volume is 1.5 mL. Some manufacturers offer a variant with extra space above the final 1.5 mL graduation mark, which can be useful when counting aliquots.

PP is a tough, clear plastic with a low coefficient of friction (Cr) that resists most chemical reagents. It is autoclavable at 121 degC (2 bar) acc. to DIN EN 285. The tubes are designed with a tight-fitting attached lid that provides a leak-free seal and reopens easily. The lid is easy to clean and has a clear surface for easy labeling. The tubing and cap are produced with uniform thickness, which provides trouble-free piercing. The rounded bottom of the tube fits the rotors of most standard centrifuges.

These 1.5ml sterile microcentrifuge tubes are perfect for storing, mixing, and processing samples, reagents, and DNA extracts. They are graduated every 100uL for easy sample identification and come with a small cap that allows the tubes to be spaced closely together in racks and storage boxes. The cap is frosted for writing on, and the tubes are certified RNase, DNase, DNA, and Pyrogen-free.

This high-clarity PP microcentrifuge tube is ideal for chromatography applications. It features a leak-proof tight seal and a large white marking area for easy labeling. The tube is autoclavable at 121 deg C and can withstand 21,000xg. The cap can be opened and closed one-handed, with a secure locking mechanism that prevents accidental opening.

The caps are made from clear polypropylene for visual inspection of the contents. The caps are also easy to write on and are compatible with most laboratory rotors. They are resistant to most chemicals and solvents and can be used in the following chromatography methods:

It has been found that long-term storage of biological samples prepared using methanol in PP microcentrifuge tubes produces a contaminant peak during UFLC analysis. This contaminant may mislead researchers into reporting an unnatural compound when interpreting a chromatogram. To avoid this, glass vials should be used for storing biological samples.

The plastic is sturdy and durable, yet soft enough to bend slightly with the fingers. It is easy to grip and has a low coefficient of friction, making it easy to handle. It is also autoclavable and resistant to most chemicals, including chloroform. The rounded bottom of the tube is ideal for most common centrifuge rotors, making it easy to fit and remove from the rotor. It is also compatible with many different types of labels. These tubes are available in a variety of sizes, with or without a screw cap. They are also available in a variety of packaging options, including resealable bags. All StonyLab products are backed by a 2-Year Comprehensive Warranty.

Polyethylene (PE)

If you’ve spent any time in the lab, then you know how important it is to have reliable materials. Choosing the right microcentrifuge tubes is a crucial part of getting accurate results from your experiments. Whether you’re analyzing DNA or performing other types of tests, the right tubes will ensure that your results are accurate. Microcentrifuge tubes come in a variety of sizes, shapes, and capacities, so you can find the perfect ones for your needs.

Polyethylene (PE) is one of the most common and widely used plastics. It’s also durable and versatile, which makes it a great choice for many applications. The chemical composition of PE includes two carbon atoms linked to four hydrogen atoms, which gives it its plasticity and low melting point. PE can be made into a wide variety of products, including bottles, bags, tubing, and more. It can withstand a lot of wear and tear, which is why it’s a great choice for many products that need to be handled and stored often.

Depending on the type of PE, there are different properties that can affect its performance. High-density PE has a higher tensile strength and a lower melt temperature than low-density PE. Because of this, it can withstand more pressure and heat. It’s often used in water pipes and other types of plumbing. It’s also durable enough to be inflated, which makes it a good option for medical tubes and other products that need to be able to expand or contract.

Low-density PE is much more transparent than HDPE, which makes it a popular choice for products that need to be clear. It also has a lower crystallinity, so it’s softer and more flexible than HDPE. This flexibility is what makes it an ideal choice for injection molding, like the kind that Xometry offers. LDPE is very affordable and durable, making it an excellent choice for many different types of products.

These 1.5ml microcentrifuge tubes by Globe Scientific feature a leak-resistant snap cap and precise graduation marks. They are also autoclavable and sterile. Each tube is molded from high-purity polypropylene that is RNase, DNase, and human DNA free. They are pyrogen free, ATP free, and PCR inhibitor free to prevent sample contamination. They can withstand centrifugation up to 11,000xg and can be stored at temperatures from -10 to 130°C. These microcentrifuge tubes are a great choice for centrifugation processes, sample storage, and other molecular biology applications.