Blogs

Tips: Centrifuge Tubes Balance

March 29, 2022 No Comments

This is to remind you to balance the rotor before running the centrifuge. If you have an odd number of tubes, what should you do?  Simple, just add 1 more tube with the same volume of water. But…… how about if you don’t want?

You can view this page that teaches how to arrange an odd number of tubes in any rotor that still keeps it balanced.
Prime numbers and balancing centrifuges

There are rules that determine when you can balance a centrifuge. Specifically, you can balance k identical test tubes, 1 ≤ k ≤ n, in an n-hole centrifuge if and only if both k and n-k can be expressed as a sum of prime factors of n.

Dynamica Velocity centrifuges have high imbalance tolerance. Eye-level balancing is allowed to run safely. 

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5ml Conical Tube: Simplify Your Workload

March 22, 2022 No Comments

For sample volume slightly larger than 2 ml but not more than 5ml, the researcher usually divides the sample into 2 or 3 tubes using 2ml microtubes. This will double or triple the workload. Alternatively, some researchers will use 15ml conical tubes but it is not convenient to handle such a small volume with the large tubes. There are 5ml conical tubes available to handle the immediate sample volume from 2ml to 5ml. Dynamica designs and launches to the market a rotor specifically for the 5ml conical tubes.

FA15E is the rotor of capacity for 12 x 5ml conical tubes. This rotor can be used in Velocity 18R Pro, 14/14R Pro. All features such as autolock, rotor recognition and imbalance detection are the same as in this family.

For out more about our Versatile Centrifuges

Dynamica Centrifuge – Keep Your Lab Quiet

March 16, 2022 No Comments

Dynamica centrifuge

A quiet centrifuge is very important to most lab users.

Every sound has a decibel level associated with it. If an item is 52 dB(A), then it has a sound similar in intensity to an electric fan, hair dryer, a running refrigerator and a quiet street.

Even at highest speed spinning, the noise level measured is within 52 dB(A). 

Watch the video that introduce more features of Dynamica centrifuges.

For more product information, please visit https://dynamica-sci.com/products

Why do we need cooling during centrifugation?

February 21, 2022 No Comments

Some of our readers have doubts after reading the last post. Why there is such a big difference of -20°C on the chamber wall while only 4°C on the sampling position? This is because, during centrifugation, the spinning of the rotor will create some gaseous friction with the air in the chamber. Imagine the rotor is spinning at a very high speed in a centrifuge and this will then generate a lot of heat. This phenomenon explains the differences in chamber and sample tube temperature.

Dynamica provides you with an accurate temperature of the sample position. Find out more about our centrifuge Velocity 30R

Why refrigerated centrifuge will need -20°C?

February 17, 2022 No Comments

As you are working on your biological samples, you will possibly need a centrifuge with -20°C. Have you ever doubted why the temperature would need to be so low? At negative temperatures, ice crystals will be building up and will denature the cells/organelles. Besides, you normally set the running temperature at 4°C instead of -20°C. Although the specification of the centrifuge is -20°C, this only means the chamber temperature. Your setting of 4°C is meaning the actual temperature on the sample position. This is your sample temperature during centrifugation.

Dynamica provides you with an accurate temperature of the sample position. Find out more about our centrifuge: Velocity 18R Pro

What is a centrifugal force?

February 10, 2022 No Comments

What is a centrifugal force?

Centrifugal force is the outward force generated when an object is being rotated. This phenomenon is used on separating substances in a centrifuge. Substances, like blood cells, organelles or DNA, are separated by their density. The higher the density, the higher the centrifugal force it is experiencing and hence being pushed to the bottom of the tube. The less the density, the upper will be the final position.

Dynamica provides you with a variety of selections for benchtop centrifuges.

Find out more about our centrifuge: https://dynamica-sci.com/products/centrifuges