pH Buffer Calibration Solution 3-Pack: pH 4.00, pH 7.00, pH 10.00 Buffers — 500 mL (1.06 Pint) Each — Color Coded — NIST Traceable for All pH Meters

Quality product and good value. Easy to use and very accurate. Performs well.

I use this solution to calibrate all of my various ph meters & it works as it should. The solutions are the accurate ph. I have not tried to use it to calibrate the one meter I have that requires slightly different ph levels than the ones included.

These came clearly marked and the different colors add to the security of using the correct product for the calibration.

Works great 💪

Works

We bought this to calibrate our ph meter for our hot sauce before bottling. I like that there is alot solution instead of a one time packet. Thank you again

Bought this set for a brewery and they are exactly what I needed for PH testing.

Buffers come with NIST documentation, and bottles are labeled with expiration dates. pH at 20 and 25 C are provided. Product seems comparable to what you would get from Fisher Scientific, etc, but for a few dollars less.