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Welcome to Service AI, your trusted source for accessories, spare parts, and certified pre-owned laboratory instrumentation tailored for scientists and startups. We provide reliable, current equipment at competitive prices, along with essential support for instruments no longer made or backed by their original manufacturers.

Our expertise spans leading brands like Beckman Coulter and Agilent, and we are committed to high-quality standards through certified maintenance, repair, and professional installation services. We believe our installation services provide the confidence and assurance you need when purchasing instrumentation from a reliable and trustworthy source.

At Service AI, we don't conduct the science—we empower scientists with reliable laboratory instrumentation and spare parts that are guaranteed to perform. We trust in scientists' expertise to determine the instrumentation they need to advance their research.

With more than 25 years of experience, our dedicated team prides itself on delivering only the highest quality products. Every instrument we offer has been thoroughly tested and certified by manufacturer-trained engineers. We ensure the functionality of our products with a Full Performance Guarantee and provide proof of performance documentation when applicable.

At Service AI, we also recognize the importance of meticulous shipping and safe delivery. Our products are handled with the utmost care to ensure they arrive in perfect condition. For those who require it, we offer professional installation services to help integrate our equipment seamlessly into your operations.

Purchase our reliable scientific laboratory equipment, and we’ll provide seamless installation service worldwide for your startup or research needs.

Advance your scientific endeavors with confidence: rely on us for recertified, trustworthy instruments at reasonable prices. It’s a smart choice made simple!

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Guide to Centrifuge Questions

Service AI support guide for centrifuge questions. Please feel free to email us at support@serviceai.us

Filtering by Tag: Rotors

Understanding Centrifuge Rotors: A Comprehensive Guide

Service AI

Centrifugation is a crucial process in biological research and bioindustrial production, allowing for the separation of particles based on their size, shape, and density. At the heart of this process is the centrifuge rotor, a device designed to hold tubes or bottles containing particle solutions. This guide provides an overview of different types of centrifuge rotors, their materials, parts, selection criteria, and maintenance practices to ensure optimal performance and longevity.

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Why do centrifuge tubes leak?

Service AI

Most leaks are due to improper handling or sealing. Always refer to the Rotors and Tubes manuals before attempting to use the rotor.

 1.     OptiSeal™ : Make sure the neck area is dry and tubes are correctly filled.

 2.     Quick-Seal™ : Fill to the base of the neck leaving a small (approx. ¼" diameter) air bubble and seal with the proper Beckman Coulter heat sealer and seal former. For best results, follow the Quick-Seal™ user's booklet directions.

 3.     Open top tubes: Thinwall tubes must be capped and filled for use in fixed angled rotors (torque the cap to 120 inch-pounds). In swinging bucket rotors the fill level is 2 - 3mm from the top. Thickwall tubes (without caps) in fixed angled rotors need to be filled between half to three-quarters full. In swinging bucket rotors fill to within 2 - 3mm from top.

4.     Bottles: Always ensure all sealing surfaces and O-rings are dry. Wet O-rings can act as a pathway for fluids, causing a leak. Be sure all O-rings are present, in good condition, and are dry.

website: www.serviceai.us ; email: support@serviceai.us

 

Determining RPM for Desired 'g' Force with a Beckman Coulter Rotor

Service AI

The RPM/RCF information is included in each rotor operator's manual. You can also use the G-Calculations program found at this Beckman Coulter website link to obtain this information. Also, many Beckman Coulter centrifuge models can be programmed using RCF ("g") or RPM so that this calculation is not necessary when using these models.

website: www.serviceai.us ; email: support@serviceai.us

How to get a stuck tube out of the centrifuge rotor...

Service AI

To remove a tube when using swinging buckets, remove any tube cap or closure and tube contents. Always invert the buckets when putting them into an autoclave. Autoclave the rotor at 250 degrees Fahrenheit, for 15 minutes at fast exhaust. The tubes or bottles should loosen or soften enough to slide out.

If it is a fixed angle rotor - uncap, vent, and empty the tube; invert the rotor over a clean wash basin, if necessary, with the lid off, and put the rotor into an autoclave. Use the same autoclave cycle as with swinging bucket rotors.


Important Note: You should NEVER try to remove a tube with a sharp object. If a spacer or cap is stuck, DO NOT autoclave; try applying dry ice to the cap or spacer.

Service AI support guide for centrifuge questions. Please feel free to email us at support@serviceai.us

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Minimum and Maximum Fill Volumes for Beckman Tubes

Service AI

Fixed angle rotors: all open-top, thinwall tubes, requiring multi-piece metallic caps, are to be filled as far as possible and sealed. For thickwall tubes and bottle assemblies, the minimum fill volume is half of its maximum fill volume.

Swinging bucket rotors: all thinwall tubes should be filled to 2 - 3mm from the top. 

All OptiSeal TM and Quick-Seal TM tubes are to be filled per instructions in the Rotors and Tubes manuals (LR-IM-, TLR-IM-, and JR-IM-). 

It will be important to note that there are exceptions to these guidelines. More detailed information and fill volumes for each tube and bottle type used in a given rotor is found in each rotor operator's manual and in the Beckman Coulter Rotors and Tubes manuals , which are available from Beckman Coulter.

website: www.serviceai.us ; email: support@serviceai.us


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