Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each

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

Seems to work well

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.

Bought this for my Apera Ph60 pen!! I love using this stuff over the buffer powder!! Seems WAY more accurate!! Quicker reading in my opinion!! Super easy to use!! Everything arrived safely with no leaks! Thank you very much!!

My only gripe is that it smells very strongly of wintergreen. Your instrument will smell of wintergreen even after you rinse it, meaning something is left coating your sensitive and highly expensive ph meter. This doesn't seem to impact performance however. And other reference materials are not as fairly priced, so its a good buy. My bottles arrived leak-free and were packaged well. I would reccomend this product as long as you can stand the minty-fresh smell that hangs around on your instrument for several days. Atleast it smells fresh i guess!

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

Seems to be a good quality product

Only thing to use for April 20

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.