Thick Glass Graduated Measuring Cylinder Set 5ml 10ml 50ml 100ml Glass with Two Brushes

The packaging is nice, the glass is thick, the accuracy is better than advertised, and the brushes are included. The quality of a name brand product would be better than a "nice" cylinder, but I can't make a relevant comparison with one. Some cylinders have less sharp and crisp markings than others on my set. The manufacturing conditions that led to the very reasonable price point may not be readily apparent, but it does indicate why the product is so reasonably priced. As an aside, I took multiple measurements with each cylinder, checking the mass of distilled water at 20C to 5 significant figures on calibrated equipment, and my results showed my results were accurate to within about half of the indicated error. There was even better precision, suggesting that the markings are in line with the tube's precise construction. I get about 0. 01ml out of a 100mL bottle Approximately 45mL +/- The amount of liquid that should be used is 2mL more. Both the 50mL and the 10mL provide consistently negative results I'm using 2mL and a They have a volume of 1mL each. You did pretty well there, I believe. As it stands, I believe I would rather calculate by mass rather than volume anyway if I wanted more accuracy. There is one special note these are marked EX (as are It should be understood that the marked amounts refer to how much will be delivered when poured out, and not to the amount contained in the cylinder. In this type of cylinder, you want to give a little bit more consideration to the bit left over after pouring.

Nathanael Marshall

| Dec 14, 2020

They work well for me because I make my own essential oil blends. Clear and visible markings make it easy to find your way around. With the wide assortment of sizes, one can easily work with numerous quantities when blending. Standing solidly without wobbling or fear of tipping, they are sturdy and sturdy. If one of them was accidentally tipped over onto a tile countertop, it did not break, chip, or crack. You can easily clean even the smallest cylinder with the brushes that are included.

Kaydence HUMPHRIES

| Oct 08, 2020

This glass comes with cleaners so you can clean it easily. The clear marks make it easy to read

The biggest models both have three dots on the base, so it's a little easier to tip if you're clumsy.

Grace Moon

| Jan 25, 2021

Amazon had these on sale and I was delighted to find them. I am not happy with the quality of this product. Each and every one of the cylinders I received does not sit upright. No wobbling while steering right. There is no flat surface on any of them. There are severe quality issues with the brushes the first time I used the big brush, it was full of The price is out of the question and I would not recommend it even at a lower.

Andi Park

| Oct 10, 2020

When I wanted to unpack my package on the front porch (thanks COVID), I dropped the one interior box that contained breakable items. We have to buy cylinders like these. It turns out not to be a problem. Without a good stomping, I'm not sure how someone would end up with broken ones. These young people aren't 25 and up A cylinder of chemical costs 35 dollars I know you didn't pay a Benjamin for the lab supplies (they sorta clink instead of clunk), but you don't think they cost a fortune either? Not at all. There is a great deal with them. The set I bought here is 1 set, but I'll be back to get another set if this one breaks. Having said that, I do not know whether they are accurate (via a scale, and some 20° water or what have you), but I would wager they are. In case it doesn't work out, I can complain about it, but other people seem to be happy with it. These have been on my wish list for some time glad I finally got them.

Keily Acosta

| Sep 06, 2020

You can tell it's cheaper glass because there are some visible abnormalities but they may not affect the measurements in any way. It looked like everything was fine. All three droppers are made of glass, two of which are very thin, but the third one is quite There is no difficulty in reading anything. There are two cleaning brushes included with it (as far as I can tell). There is one minor concern regarding its label, which reads MADE IN CHINA, and when I opened the box all of the glass and accessories were covered in a powdery white substance. My first thought was to snort a line. I am not sure what that is, but I assume it is something from the manufacturing process, or perhaps talcum to prevent the glass from rubbing together during The truth is I am not sure. It is not likely that I unknowingly got a face full of In general, this is an excellent purchase. I would recommend it.

Amelie Heath

| May 13, 2021

Although the graduated pipettes are useless, the rest of the pipettes are quite good. My cylinders are very good. I am quite satisfied My order arrived intact and was in great condition. The cylinders are thick and strong, and hold up to rapid temperature changes rather than soda lime glass. They appear to be made of good *33 borosilicate and the graduation marks are as accurate as I require. Having used them more than nine times since I received them, with a number of organic solvents and strong acids, and to measure chemicals across a reasonably large temperature range (roughly 290°K to 400°K), I can say I've been very pleased. The fact that I can just buy a brand new Büchner funnel of virtualy any type for no more than $ 10 is amazing I could not believe that I would be able to order 50, or grahams, liebigs, flasks, stands, and so much more, and have them arrive today or tomorrow. Home / small lab chemistry involving only legal compounds isn't illegal yet, so "they" haven't made it illegal yet. I am not a fan of the droppers, especially the graduated dropper which is completely ineffective out of the package. Although the bulb is so loose that it just falls off when you invert it, the glass itself has a notch that made it compatible with another dropper bulb I had on hand. Unfortunately, I don't have enough power to pull a whole cc now, but at least I can seal on the original bulb at some point. Only because of the awful pipettes did I dock a point.

Tessa Barber

| May 11, 2021