Single-value NIST traceable pH buffer reference solutions, sold individually.

Below-the-Fold Copy

Order exactly the pH buffer you need. Biopharm individual buffer reference solutions let you replace a single value or stock only the buffers your lab uses, each traceable to NIST standard reference materials and color-coded for quick identification.

All solutions are packaged in 500 mL (1.06 pint) bottles, made in the USA, for laboratory use.

Available values:

  • pH 4.00 plus or minus 0.01 at 25 C
  • pH 6.86 plus or minus 0.02 at 25 C
  • pH 7.00 plus or minus 0.01 at 25 C
  • pH 9.18 plus or minus 0.02 at 25 C
  • pH 10.00 plus or minus 0.02 at 25 C

Frequently Asked Questions

Have questions about our laboratory products or ordering process? We've answered some of the most common questions to help you find the information you need quickly.

Can I buy a single pH buffer instead of a full kit?

 Yes. Individual solutions are sold separately so you can restock one value or build your own combination.

What does the tolerance at 25 C mean?

It is the accuracy of the buffer at the reference temperature of 25 C. A tighter tolerance means a more precise calibration point.

Which pH values do I need?

Match the values to the range you measure. pH 7.00 is the common starting point, paired with pH 4.00 for acidic samples or pH 10.00 for alkaline samples.

Are these the same buffers used in your calibration kits?

 Yes. The kits are built from these same NIST traceable solutions.