Keeping your pH meter calibrated is the best way to ensure consistent and accurate pH measurements. A pH buffer solution is essential to calibrate a pH meter accurately.

About Calibrating Your pH Meter

Regularly calibrating your pH meter will guarantee its effectiveness. Determining the right frequency for your requirements will depend on two things:

1. How often you use your device (frequency); and
2. Your required level of accuracy (standard points).

Frequency: If you use your meter daily and need very accurate measurements, we recommend you calibrate daily. If your pH meter use is casual – like a few times a week - weekly calibration may do the job.

Standard Points: Instrument Choice Scientists recommend that you calibrate your meter - it's easy and will only take a minute. All you'll need are the correct pH solutions for your application(s). For best results, perform your calibration to a minimum of two standard points.

Figure 1 pH7.00 Buffer Solution, 250ml
Product code: PH7-250R

Where To Buy Your pH Buffer Solution

Instrument Choice offers pH buffer solutions to cover all pH calibration requirements. pH solutions are available in individual bottles or sets of three.

Our scientists have assembled below a list of the most popular and best-performing buffer solutions. If you can't find the pH buffer standard concentration you require, browse the full range here or contact us for assistance.

Individual Bottles (for top-up or single pH buffer solutions)

• pH 4 (250mLand 500mL)
• pH 7 (250mLand 500mL); and
• pH 10 (250mLand 500mL). 

Figure 2 3 Pack Of Ph Buffer Solution
(Ph 4, Ph 7, Ph 10), 500Ml Each
Product code: PH-4-7-10-500

Packs of Three Bottles (to calibrate and cover the full pH range)

pH Buffer solution kits with pH 4, pH 7, and pH10 calibration solutions in:

• 250mL bottles: and
• 500mL bottles

Conclusion

Regular calibration with pH standard buffer solutions will ensure accurate pH measurements from your meter. Instrument Choice has an extensive range of pH buffer solutions for every make and model of pH meter.

If you need a specific brand and can't find the right buffer solution browse the comprehensive list here.

If you need help determining the solutions you need for your application, speak with an Instrument Choice Scientist! We're here to help! Call 1300 737 871 or email [email protected].