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

Great product. Arived on time and with no damage. All the tubes arived not broken. Highly recommend.

They are standard thinwall flat bottomed round 5 ml glass test tubes with plastic cap, that you find in the API test kits. If youve lost or broken a few in your test kits, or have more than one system to test, its nicer to have extras. Only fault is the box is very thin flimsy postersheet type cardboard, and in Amazon fulfillment, the other contents of the box shifted and smashed a few. I didnt deem it bad enough to go through return and replacement but do be warned, the boxful as is is pretty fragile, so if you need a full 24 you might end up a few short with one box. They will also work with the Tetra tests, anything that needs a 5 ml water sample, they will work.

The glass is really clear (not cloudy like some other brands) and its great that the level line is marked off (makes measuring the amount for water tests super foolproof). I also bought some cheap plastic pipettes so that I disturb the tanks as little as possible, but more so because its really easy to fill up these tubes to the line with the precision of a pipette. The caps fit snugly and Im never worried about any leakage while shaking up the chemicals with the water during testing. To clean, I just run it through some warm water after Im finished with the testing and the tubes are as good as new again. Great product and I love testing my aquariums water quality with this more precise method.

These are great! Im glad I ordered them.

This is exactly what I needed to keep my salt water tank levels where they need to be but is very pricey

I am glad that I ordered these. I have the API mater test kit for Fresh Water and I dislike running out of test tubes. This solves that problem. Now I can wash them all at once and be ready to go. The lids are nice and tight on the tube so that I dont spill while shaking the solutions. They are durable and I can tell that they will last a really long time.

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

Just as expected.

Sad these are offered in such a large quantity but luckily I have lots of tests to do. At $0.50 a pop, not exactly cheap but the best price per unit i can find. They leak when shaken, a common thing for water tests. Not good when shaking corrosive chemicals. They do break as theyre small and glass, but not entirely frail like grandmas fine wine glasses. The caps pair nicely (minus the leaking) and the tubes can be stood up on their ends. These are OEM, come with the 5mL markings, caps, and everything, but are a bit pricey. Also they leak. Honestly a big turnoff for API tubes.

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