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

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’m clumsy and break my tubes, these are a good replacement tube.

I love these. Ive broken so many by dropping them on a tile floor and decided to buy this instead of more test kits and it was absolutely worth it. You should pick up the test tube rack as well because that makes doing water tests all that easier. You can also test your pool with it too if you want. I do just because I can. Two different tests are better than one right?

Replacement API test tubes. I dont have the actual 24-pack, but I have plenty from purchasing individual tests and kits. Standard borosilicate glass. The caps wear out fast. They stop sealing as tight, and you will find yourself splashed with drops if you vigorously shake them, requiring you to put extra pressure on the cap to keep all of the liquid in. If you clean them with diluted bleach solution, it will dissolve the paint on them, so beware of that. The price for a replacement pack is ridiculous, and API doesnt sell them in any lesser packages at retail unless you go thru them, then its $2 per test tube. Edit: I have since purchased a pack of these, but my review remains unchanged.

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

I had a hard time getting my biofilter started. I had to buy the API test hit with the tubes and had broken two tubes and basically, you need 5 tubes to do all the tests.

of course these are great but I (or anyone I know) would ever need 24?! Should really make a smaller box. I only wanted a few extras since I broke one of my own. Also there was no bubble wrap around them. This box was thrown into a large amazon box. I have no idea how none of them managed to break.

Perfect tubes! :) Sure, sometimes they leak if I dont fully push the top closed, but thats a me problem, not the tubes problem. Having all these extra tubes helps me out on water change day so I dont have to keep rinsing out the same 4 tubes to test all my tanks :)

Nice. Same as the originals. I wish they sold boxes of 5 or 10 but I am pleased about them anyway

I bought them to test my aquarium water. Just what I needed!!