We offer buffer solutions at 3 standard pH values (4, 7, and 10). We have calibrated our solutions to 3 significant figures using NIST-traceable materials.

Our solutions have a shelf life of 6 months; you may extend this shelf life by storing them in a refrigerator. Solutions should warm up to room temperature before use.

We also carry buffer solutions for controlling water hardness and pH probe refill / storage solutions.