Centrifuge Machine, Laboratory Centrifuge 4000 RPM, 6 x 20ml

It's perfect for you, better than I imagined

ONE star is to allow me to leave a comment! I bought this machine in June, and I tested it out and used it one time. It is now August, I attempted to start using my machine. One of the knobs seemed very loose and just kept spinning, i tried tightening it with pliers. The machine just kept beeping at moments. But the actual Centriguge did not spin the blood at all. It is a waste of blood, and a waste of a needle stick. Amazon told me I was not eligible for a refund, and referred me to the sellers customer service. I have yet to receive that email from Amazon. And judging by the previous reviews, I’m certain I will not either receive the email, or acquire any assistance or justification from the seller.

I’m a mobile phlebotomist and it works just fine for me. I centrifuge in my truck while driving from one location to the next and I have no issues. Great buy in my opinion.

it spins, but what it doesn't tell you directly is that you have to use the tubes that come with it. you can't use the very 15ml conical centrifuge tubes. they don't fit. they hit on the inside and the caps interfere with each other so you can only put 3 in at a time. I didn't send it back. instead I made some serious mdofications to it to gain the clearance and 3d printed adapters to allow the use of the 15ml tubes. I wouldn't buy this again. but if you are looking for a cheap way to spin tubes and don't mind doing the mods, get it. next time, I'll be paying the higher price for a "real" one.

I recently picked up the NORJIN Electric Lab Laboratory Centrifuge Machine and after several runs, I’m genuinely impressed with how well it performs for its price point. It accommodates six 20 mL tubes at once, which is great for batching multiple samples. The built-in timer and speed-control knobs give you decent control over run conditions — I’ve used it for 10-minute spins and 20-minute spins with success. It’s compact enough for a benchtop setup and surprisingly quiet in operation. Balanced load matters (make sure tubes are paired and balanced) — the instructions emphasise symmetric loading. Where it could improve: The very highest speed/RCF is modest compared to high-performance centrifuges. If you need ultra-high speeds (10,000 rpm+ or >5,000×g), this isn’t the ideal pick. The rotor is fixed for 20 mL tubes across six positions — if you foresee dramatically varied tube sizes (e.g., 50 mL or micro-tubes) you may need additional adapters or a different model. Ensure you buy for the correct voltage (e.g., AC 110 V) and confirm shipping/instructions/support are appropriate for your region. My verdict: For small-scale lab work — biology, chemistry, educational labs, or hobbyist use — this centrifuge does exactly what I needed: reliable separation, durable, easy to use, good value. As someone who runs a boutique store but also values precision in small equipment setups, this gave me solid performance without breaking the bank. If your needs are basic to moderate, go for it. If you’re in an intensive research/clinical environment requiring high throughput, consider stepping up to a more advanced model.

Bought this for my 12 year old science loving son. He's used it a lot and it has held up well. Not many kids ask for a centrifuge for Christmas but I'm glad he did.

I ended up returning this item. When I tried to use it, it wouldn't start for awhile, then would lurch to life all of a sudden. Then, it seemed like it would lose power halfway through, then start back up again. The test tubes that it came with didn't have caps, so I had to get different ones to use. It was also so loud that people down the hall at my school could hear it from several classrooms away.

Quiet motor will purchase another one