API REPLACEMENT TEST TUBES WITH CAPS For Any Aquarium Test Kit Including API Freshwater Master Test Kit 24-Count Box

I broke a few tubes in my API test kit and was very relieved you could buy replacements. These seem to be more solid than the ones that came with the kit, or maybe I’m just more careful now. You get a whole lot of tubes in this box so I don’t think I’ll need to buy any more for awhile. Very convenient, good purchase!

These tubes are exactly like the ones in the aquarium test kits and are sold in abundance of 24 tubes and caps for almost nothing! I highly recommend this product and seller!

As a long time goldfish keeper, these are my absolute favorite for water testing. I like having extra on hand because the caps begin to lose their grip after long time use and the water will come out when you shake them up. I feel like a scientist when I use them and Im overwhelmed with power having so many on hand

Accurate to 5ml line. Tops are just a bit leaky like mentioned. Most irritating to me was I only received 22 of the 24.

The picture is not what I got. What I got was the API testtubes which I am happy with. They are the exact same that came with all the API tests that I already have. And to make your life easier if you have a bunch of these get one of these: Karter Scientific 208V2 Plastic Test Tube Rack for 12/13mm Tubes, Holds 50, Detachable Its a perfect fit.

These are the exact same tubes that come with the testing kit, which is what I wanted. I was happy to see that. In general, I think these tubes are kind of delicate, but I think my expectations of them are too high. They probably shouldnt survive a fall from the counter onto tile ;) But the tip-over on the counter itself broke one and annoyed me. But I bought a test tube rack, so I think Im good now. Shouldnt have any fall again :)

Master kit comes with the tubes, but I seem to break them every time.

Product is exactly what is described. Delivered with nothing broken, packaged well. No matter how careful things occasionally break. I wanted a few more tubes to replace 2 I had broken and also wanted to be able to test multiple tanks without having to clean in-between. I hesitated at the price, did I really need 24? But it made more sense to just get the 24 than just getting 3 or 6. Glad I did, made testing much simpler.

I thought I only needed a handful, but ended up needing over 3 times as many test tubes for testing aquarium water. So, having the large pack with extras was perfect and suited me perfectly. Same vials that come in test kits.

They work with the API water test kits, which is all I needed. Took a star off because not all of the lids are leak-proof, which can be an issue for the tests that require shaking vigorously like nitrates.. but all of their test tubes are like that, so oh well.