NTLLAB 7pcs/Pack Mixed Size PTFE Magnetic Stirrer Mixer Stir Bars Type-B

Perfect

Great

What you expect. Good

All 7 arrived very quickly, safe, but not all ready for use, as two (largest & smallest) have rust spots and can not be used for what they're intended. Tried to see if it was just a manufacturing mark or anything that could be wiped clean but the markings are on caves/scratches which makes me believe they are rusted and can not be used. I'll have to stick with the other sizes.

These go round and round.. Energizer Bunny got all dizzy chasing it. You should have been there. Foxy methoxy. Bunny tunnafunny.

The holy trinity of lab work. Quality made, highly functional, cost effective!

Perfect set

Products works as advertised

Good

These magnetic stir bars allowed me to sample different sizes to see what works best with my 2 Litre Flask when preparing my yeast starter. By moving the flask to different areas on my magnetic mixer, I found the "sweet spot" where the stir bar spins most effectively - and with the minimum of noise.