pH buffers

Secure calibration – the right buffer for your measurements

Choose the buffer that matches your calibration interval and your method. We offer a wide range of certified pH buffers from Reagecon Diagnostics, Mettler-Toledo, WTW, SI Analytics, and Hamilton. Choose between 20, 50, 250, 500, and 1000 mL– from standard values like pH 4.01, 7.00, and 10.01 to more specific values like 1.68, 3.06, 6.865, 7.413, and 9.180.

pH-measurement - click to open the catalogue (danish)

Buffer, technical, LLG, pH 4,00 ±0,01, 20°C, 1000 mL [4664603] Buffer, technical, LLG, pH 4,00 ±0,01, 20°C, 1000 mL

Buffer, technical, Mettler-Toledo, pH 1,00 ±0,02, 25 °C, 250 mL [4714560] Buffer, technical, Mettler-Toledo, pH 1,00 ±0,02, 25 °C, 250 mL

Buffer, technical, Mettler-Toledo, pH 3,00 ±0,02, 25 °C, 250 mL [4714561] Buffer, technical, Mettler-Toledo, pH 3,00 ±0,02, 25 °C, 250 mL

Buffer, technical, Mettler-Toledo, pH 6,00 ±0,01, 25 °C, 250 mL [4714562] Buffer, technical, Mettler-Toledo, pH 6,00 ±0,01, 25 °C, 250 mL

Buffer, no-borate, Mettler-Toledo, pH 9,00 ±0,01, 25 °C, 250 mL [4714563] Buffer, no-borate, Mettler-Toledo, pH 9,00 ±0,01, 25 °C, 250 mL

Buffer, technical, Mettler-Toledo, pH 12,00 ±0,05, 25 °C, 250 mL [4714564] Buffer, technical, Mettler-Toledo, pH 12,00 ±0,05, 25 °C, 250 mL

Buffer, technical, Mettler-Toledo, pH 12,45 ±0,05, 25 °C, 250 mL [4714565] Buffer, technical, Mettler-Toledo, pH 12,45 ±0,05, 25 °C, 250 mL

Buffer, technical, Mettler-Toledo, pH 13,00 ±0,05, 25 °C, 250 mL [4714566] Buffer, technical, Mettler-Toledo, pH 13,00 ±0,05, 25 °C, 250 mL

Buffer, Mettler-Toledo, pH 3,776 ±0,010, NIST/DIN 19266, 250 mL [4714567] Buffer, Mettler-Toledo, pH 3,776 ±0,010, NIST/DIN 19266, 250 mL

Buffer, Mettler-Toledo, pH 7,413 ±0,010, NIST/DIN 19266, 250 mL [4714568] Buffer, Mettler-Toledo, pH 7,413 ±0,010, NIST/DIN 19266, 250 mL

Choosing a buffer

For routine calibrations, you get the best results by choosing two or three points around your sample's pH value, or to the limits of your expected measurements. Most instruments require you to choose buffers from the same manufacturer and series for correct temperature correction (ATC).

Precision and documentation

Many buffers are made with traceable certificates (e.g. DAkkS or NIST/DIN) to easily document your calibration in QA/QC environments. Tolerances and uncertainties are clearly stated on the label or certificate, making it easy to fulfil internal and external requirements.

Good practice

Keep the bottles closed tightly, let the buffer reach ambient temperature, and avoid cross contamination by never returning used buffer to the bottle. Alway pour a suitable amount into a clean container, or use buffer sachets for small, single-use amounts. Note the expiration date and change to a fresh batch for repeated calibration to ensure stable, traceable results.

Brands and compatibility

We have buffers from WTW, Mettler-Toledo, Reagecon, and LLG Labware. The range covers needs from teaching environments to advanced QA/QC and process. You can use the buffers with both portable and tabletop instruments.

Why buy from us?

You get a wide range of in-stock items, quick delivery, and access to guidance, support, and service from specialists – from the simple solutions to the advanced setups.

If you have questions about choosing a buffer or performing a calibration? Contact us – we are here to help you find the best solution to your application.