Membrane Solutions Conical Centrifuge Tubes 15mL, 50 Pack Sterile Plastic Test Tubes with Screw Caps, Polypropylene Container with Graduated and Write-on Spot, Non-Pyrogenic, DN/RNase Free

We use these all the times in our Horse Breeding Lab. Great product. Reliable. Highly reccomend.

done good job

The product was exactly as advertised. They were also shipped promptly. Would order again from them.

I use these to portion out citric acid and sodium bicarbonate for my Sparkel soda maker rather than buying the overpriced sachets. I measure each on a grain/gram scale at the same weights I found in the sachets that came with. I purchased a plastic rack as well to hold them all. Half are citric acid, the other half baking soda. Perfect size for the machine opening to pour into too!

Very good value for your money. I plan to use them for art supplies. They seem very sturdy and durable. I am not sure how well they seal up yet. I will find out soon enough.

I'm not using these in an actual centrifuge. I bought them for pre-measuring out oxy shock powder for my hot tub. They work wonderfully for this. The lids fit tightly and stay put, graduation markings are solid and easy to read, and they're very inexpensive. This ticks all of the boxes for my needs.

Just what I needed to carry electrolyte products for cycling.

Works great for mushroom slants. Way easier to get in and out of with a scalpel than the traditional narrow glass test tube. Lids are a bit loose feeling but no contamination so far and I've done a dozen or so slants.

Product arrived on time and we'll packaged, no problems!