40pcs 30ml Serological Test Tubes with Black Bakelite Screw Caps

I rarely leave reviews but... These are the best bang for your buck by far! I can’t tell the difference in these and pyrex brand glass. I have PC sterilized them more than once and they are great. Also the package came with all tubes intact. Not one of them were broken. Very good product!

I received these beautiful glass tubes with no breakage. Having been a chemistry major, we occasionally made our own glassware and appreciate their fragility. These will be used to store home grown vanilla beans thereby limiting the use of plastics.

Pretty reasonable and does what it says it does. Only thing is my daughter dropped one and it broke. Maybe I'm scoring this harshly on that basis, but growing up I seemed to recall at school they would bounce rather than break.

I used these for a classroom lab. They were very durable and easy to clean. I only wish that waterproof labels came with them.

Just as described.

I thought pcs meant 20 tubes with 20 caps. There are actually 40 tubes with 40 caps. A very good deal I'd say. They arrived undamaged in my case. I've already used 5 of them in the autoclave. They work just fine. These should last me many years.

The tube arrived on time and none broken.

Overall I love these. good quality glass and lid, no warps or breaks after autoclave. I noticed out of 80, 10 were missing the silicon liner insert, which makes them prone to leaking. So maybe you're really only getting 35 usable tubes in a package, still decent. Figured this comment might save someone from losing something valuable if they didn't double check for the silicon liner.

If these come back in stock I will buy again

De excelente calidad, llegarón en buen estado, bien empaquetados, lo recomiendo

lo comprado es lo entregado y en tiempo de entrega