Apera Instruments3M KCL Storage Soaking Solution (8 oz.) for pH and ORP ElectrodesCarbonfree Certified

Excellent product, does what it's supposed to and keeps my apera ph20 ready to go for daily use. My only gripe would be that a storage solution should also come with the ph pens. Other than that, this product does what it's supposed to and apera knows what they are doing! With this solution I've only had to calibrate my ph20 2 times in the 5 months I've had it.

I have a smart pH sensor for my pool that needs to be stored in 3 M KCl solution during the winter months when the pool is closed. It only needs a tiny amount of fluid, so this container is a little bit of overkill, but compared to some other products this one is pretty inexpensive, making it the best choice. It's the proper concentration that my sensor manufacturer specifies, and the bottle is easy to handle and pour. It arrived without any leakage and is just what I needed!

Works great. Pen stays calibrated between checks

Not much of this fluid is used and it is necessary for the storage of the devices made by apera. There needs to be smaller and more affordable bottles available to purchase. This was the only size available to me, and while it will take me awhile to use, I could have saved a little money right out the gate if a smaller bottle was offered. The bottle did not leak and seems to do it job well. Easy to use, I just wish there were more affordable options for people in their already expensive hobbies.

Pretty standard but good price and no leaks so I’m happy!

fast bottle came seal in its container plus a zip lock bag for added protection from leaks package well in box will buy aagain

Great quality for the price.

Does what it's supposed to do. Thanks apera you guys ROCK!!!!!!