Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50, Detachable, Karter Scientific 208U2 (Pack of 1)

This tube rack is awesome! It is sturdy and durable. I do not have to worry about the tubes tipping over which is so nice. I appreciate the high quality for the price. Great option for a rack tube.

Kind of weird to put together, but after it’s done it’s perfect for my Scentbird samples

Works wonderful for 5ml ink samples! Didn't come with instructions but it was pretty straight forward! I had no issues putting it together wasnt very hard.

I bought this test tube rack for holding ink samples from Goulet Pen's Ink Drop program. I like that it holds 50 samples instead of the 40 that Goulet's model holds, and honestly, I'd have to guess that the same manufacturer makes both models. Because there are five rows per column and because each drop contains five samples, too, it's super easy with this rack to organize your samples by month. I love that! Some criticisms of this model claim that it falls apart easily if you try to move it, but I've found that that's not really the case for me, especially if there are tubes in any of the slots. Because the tubes actually go through the holes in the first and second layers, a tube acts as a sort of "pin" holding both layers together. The fit of each layer into the slots of its holders, too, is quite snug and not likely to come loose. I can pick my model up and wave it around all day long without it coming apart. However, if your fittings are lose, a small tab of glue on the open ends of each slot can lock the inserts into place permanently. For the price, I find just a wee bit of DIY totally acceptable for using this thing to its fullest potential, but hey--for $6, I'm happy the thing will just sit still on my desk without falling apart. Plus it looks nice. I do wish the manufacturer would include slots on the top of each side holder and pegs on the bottom, placing them so they interlock if stacked. I think there's actually enough clearance on the bottom of this unit that I could stack them on top of my ink samples, if only the one on top could be secured so it doesn't slide around. And the quality control on these clearly isn't all that great. My unit arrived with a tiny crack in the bottom shelf and slight irregularities in the slits that made assembling the thing a little tricky. Had it gone the opposite way, with irregularities that made the thing too loose instead of too tight, I can see how that could let the shelves slide out too easily. Again, though--$6. All in all, a wonderful solution for storing sample ink vials. I like it and would recommend it especially to those who keep lots of samples on hand or are subscribers to the Ink Drop program.

Exactly as described. Working perfectly for my new diamond art projects. The rack with plastic tubes make it easy to see different colors that I’m adding to clothes

excellent to have for extra storage to use with all my scentbird perfume bottles. the travel sizes are small glass viles and i never know how to store them. they look super cute and i like how there is another layer to hold the bottom and mid section of the bottle. i truly could not find anything i was willing to pay, and certainly refuse to buy the actual perfume holders from the official scentbird. its not that flimsy, but i would also not describe as sturdy. still a five star product for myself & needs personally! very happy ♡

Great for storing my ink samples. It arrived in perfect condition and wasn't difficult to put together. It just took a bit of wiggling and gentle pushing. Once together it is sturdy and i can lift the whole thing easily. It is just under 3 inches tall with the ink vials in it, so fits perfectly on my desk shelf. Great value.

Well, first off, the color of this product is a very bright, transparent, light teal color. I actually love the color much better than their picture's plain transparent blue. But it's just surprising to receive something that looks totally different than what you expected. I had trouble trying to slide the individual pieces in and had to get some help after 15 minutes of failure. It wasn't super simple to figure out, because the racks only fit in a certain way....but maybe it will be easier for others. Once it was all put together, it seemed ok. The rack holds up my lip balm containers, although it's all pretty flimsy. The thin plastic trays bend up or down very easily with any kind of pressure. I have little doubt that eventually it will break or snap somewhere. This is not stiff or thick or layered plastic at all. But for $6 or $7, it's not too bad. If the price was up above $10, that would be extreme overpricing. I'm a bit disappointed that it holds so few tubes. It just seemed like more in the picture, but I'm sure that's just my bad for not realizing the true size. I put lip balm tubes in several of the rows.. then I placed a few empty 5-10ml round lip balm jars on the extra space on top. But it doesn't stay put well. If I touch the rack, things instantly fall off. This is the cheapest you can go, in terms of plastic durability. A very small child could probably break each rack by himself, without intense pressure. So. This is just ok. But what can you expect for $6 other than a few slices of plastic with holes in them? This will still do its job properly, so no major complaints yet. I had just expected something more solid at the least. But. I DO like the pretty color.... so that's a plus... right?

Sturdy and as expected!

Perfect for their purpose!

I bought this to store 2ml vials of perfume samples and it’s perfect. Some of the shorter vials don’t stick out of the top very much but I don’t have any difficulty pulling them out. This product was easy to assemble, took less than 5 mins.

Just want to thank you the stand is really sturdy and nice looking easy to assemble.. so pleased can do my api tests without the test tubes breaking and rolling away!!!

really good