Premium Graduated Cylinder Set - 50mL, 100mL & 250mL - ASTM, Class A - Protective Collars, Hexagonal Base - Blue Graduations - Borosilicate 3.3 Glass

Great quality for the price! Now I can cook meth just like the pros!

Haven't used but perfect for lab experiments

Excellent product, though fragile if tipped over or dropped. The best way to remove alcohol from gasoline is to add an amount of water equal to the alcohol content. Gasoline and alcohol don't mix very well, but water and alcohol just love each other, so when water is added to 10% gasoline (10% ethanol blend), it bonds with the water molecules, and due to its heavier weight, drops to the bottom of the container, forming a distinct line of separation between the water/alcohol blend and the now pure gasoline. So to make sure you get all of the alcohol out of the gasoline you have to make sure you are adding enough water to equal or better the volume of the alcohol. Putting 100ml of 10% gasoline in a test tube, and then adding 20ml more water will cause the contents of the tube to rise to the 120ml line. After 30 or 40 minutes of being undisturbed, you can see the amount of alcohol by looking at where the line of separation is. It is very easy to see. If it is sitting at the 31ml line, then alcohol makes up 11% of the gasoline volume.

Came very securely packed which is always nice for glass. They don't feel overly thin or fragile. They are easy to work with and pour very well. I was able to precisely measure solvents to make adhesives that turned out very well. Markings seem accurate. No problems cleaning or drying them. The slides for marking measurements are easy to move but stay secure in their spot. Not sure if the paint will hold up long term if you keep sliding them. Overall they've worked great for me.

Good enough for general lab or measuring work. Could be more durable, but in this price range, they are ok.

I only needed one of these cylinders so I'll store the others for now. easy to read and pour.

High quality, accurate measurements. Well made glass. The yellow "ring markers" to establish your desired measurement to make it easier to read the vial are clever how ever they are impractical for anyone who needs to take dynamic measurements, not a static one. I recommend getting these for their various uses. I use these for nutrients and they are levels ahead of whats offered within the industry. Couple these with some of the disposable pet syringes for very accurate measurements and for ease.

Work great