Apera Instruments AI1115 pH Calibration Buffer Solution Kit (7.00, 4.00, 10.01), 8 oz. for Each, NIST Traceable

Works as intended for my ph meter. Great design for solution storage and ph meter holder.

Love this now its easier for me to ph my pen without having to pull out 3 cups etc.came well packaged & a day earlier !

These are the go-to reference solutions for testing the acid levels in wine. This brand has a 2-year expiration date. The coloration of these references makes it easy to not mix them up.

Seems to work well

It's a must have to keep your pH close. Solution pH is accurate according to my tester.

Some plants need specific pH water to thrive. I use this to balance the number to where I want. ofcourse youll want to be in the lower ranges but they work great. Containers are well built and dont leak. I checked the pH with some strips and the levels were bang on. I thought for the price it was worth it.

Another excellent product I like to use it as a backup or if I just want to doublecheck my charts thank you so very much

Love appears, they are a good company that always pleases. They come with good in depth instructions and I will be purchasing more in the future, always on point.

No issues. As expected. Storage solution is a nice addition. Tested against freshly cal'd unit and spot on.

Amazon package was fine .. the apera box was fine that everything came in.. but the calibration 10.1 bottle was open an leaked about 3" down.. the 4.0 bottle was down 2" and the 7.0 bottle was down and inch from top. Only bottle that was sealed was the storage liquid ... not happy, not ordering from flamingo again

Well packaged and excellent price.

All lids not tightened. Storage solution lid really loose; seal broken causing liquid to escape and run down the bottle, crystallizing around mouth and down sides. Noticeably lower liquid volume in bottle.

They arrived half frozen. Full of slush but the purchase and delivery went smoothly.