What Should Be Considered When Selecting Centrifuge Tube For Sample Separation
Author : HitokaCece HitokaCece | Published On : 23 Sep 2026
Centrifuge tube holds samples while spinning inside centrifuge to separate solid particles from liquid phase. Tube failure under high rotation speed can leak sample or even crack, which contaminates equipment and creates safety hazards. Many users only check tube volume and ignore speed rating and chemical resistance. This article lists critical points to evaluate centrifuge tube for lab separation tasks.
Maximum Speed Rating Of Centrifuge Tube
Maximum rated speed defines safe spinning limit for centrifuge tube. Never run the tube beyond its rated speed. Exceeding limit creates heavy mechanical stress, making tube deform or rupture. Different tube sizes carry different speed limits. Small tubes often support higher rotation speed. When preparing samples transferred by pipette for separation, confirm tube rating matches centrifuge setting. Haijlab clearly marks rated speed on centrifuge tube product specification. Buyers should remind end users not to exceed stated speed limit.
Material Property Of Centrifuge Tube
Tube material decides chemical tolerance and temperature range. Common plastic centrifuge tube is transparent, lightweight and shatter resistant. It works for aqueous samples and many organic compounds. Some solvents can dissolve or swell plastic tube, so users must verify compatibility. Glass centrifuge tube suits special high temperature applications but breaks easily under centrifugal force. Haijlab provides plastic centrifuge tube for most standard separation work. Buyers check sample reagent type before recommending tube material.
Cap Sealing Of Centrifuge Tube
Cap sealing prevents sample leakage during spinning. Poor seal allows aerosol escape, which may spread sample and cause cross contamination. Tight cap should stay closed under centrifugal force. Caps that stick too hard create trouble for repeated opening. Proper design balances sealing strength and easy access. Haijlab controls cap machining quality for centrifuge tube. Buyers can test sample caps to check whether they seal well and open smoothly.
Conical bottom design is widely adopted for centrifuge tube. Solid sediment gathers at the tip after spinning. It becomes simple to take away supernatant with pipette. Flat bottom tube stands upright on bench without rack support, but sediment collection is less convenient. Users pick shape according to whether they need separation and pellet collection. Haijlab supplies conical centrifuge tube commonly used for sample separation. Buyers can select tube shape matching routine sample processing needs.
Storage Compatibility Of Centrifuge Tube
Many labs store separated samples directly inside centrifuge tube. Low temperature storage brings new requirements. Some plastic materials turn brittle under freezing condition and crack after temperature change. Buyers should confirm if tubes can endure cold storage before recommendation. Avoid filling liquid all the way because liquid expands while freezing. Haijlab centrifuge tube can be used for low temperature storage for suitable samples. End users may follow storage guidance to reduce tube cracking risk.
