Calibration 101 – Choosing the Right Buffer Solution for Your Application

Accurate pH measurements are critical in the dairy and food industries. Whether you’re monitoring milk acidity, ensuring the safety of fermentation processes, or maintaining quality control in production lines, precisely calibrating your pH meters using standard buffer solutions is necessary.

At Dairy and Food Consulting Limited, we proudly supply Hanna Instruments’ high-accuracy pH buffer solutions trusted by professionals worldwide. Our range includes:

  • pH 4.01 Buffer Solution (HI7004L) – 500 ml
  • pH 7.01 Buffer Solution (HI7007L) – 500 ml
  • pH 10.01 Buffer Solution (HI7010L) – 500 ml

By choosing the correct buffer combination, you ensure:

  • Greater calibration accuracy
  • Better pH meter lifespan
  • Reliable product quality assurance

Understanding Buffer Solutions – Why 4.01, 7.01, and 10.01 Matter

🔹 What Are Buffer Solutions?

Buffer solutions are liquids with precisely known and stable pH values. They are used to calibrate pH meters and ensure accurate readings by setting reference points across the pH scale.

🔹 Why Use Three Points of Calibration?

Using three buffer solutions (acidic, neutral, and alkaline) gives you a full-range calibration:

  • pH 4.01 – Used for acidic samples like yoghurt, fermented milk, and certain cheeses.
  • pH 7.01 – The most commonly used buffer, ideal for neutral pH verification.
  • pH 10.01 – Used in alkaline ranges, relevant for cleaning solution tests or certain CIP systems.

🔹 Product Highlights (Based on Hanna Instruments Specs):

🔸 HI7004L – pH 4.01 Buffer Solution

  • Colour-coded: Red for easy identification
  • Accuracy: ±0.01 pH @ 25°C
  • Comes with Certificate of Analysis

🔸 HI7007L – pH 7.01 Buffer Solution

  • Colour-coded: Green
  • Used in water quality, food testing, and lab calibration
  • pH Stability ensures reliable calibration for daily use

🔸 HI7010L – pH 10.01 Buffer Solution

  • Color-coded: Violet
  • Essential for testing alkaline products or equipment rinse water

Best Practices for Calibration & Our Full Solution Range

Best Practices When Calibrating pH Meters

  • Always use fresh buffer solution; discard used portions.
  • Perform daily calibration or before each shift in dairy plants.
  • Rinse the electrode with distilled water between buffers.
  • Store your pH electrode in a proper storage solution (never in distilled or tap water).

 Our Hanna Buffer Products Include:

  • HI7004L – pH 4.01 Buffer Solution – Red, 500 mL
  • HI7007L – pH 7.01 Buffer Solution – Green, 500 mL
  • HI7010L – pH 10.01 Buffer Solution – Violet, 500 mL
  • HI70300L – pH Electrode Storage Solution – Keeps electrodes hydrated
  • HI7061L – pH Electrode Cleaning Solution – Removes residue and buildup

💡 Why Buy from Dairy and Food Consulting Limited?

  • We are a trusted supplier to the dairy and food industry in East Africa.
  • We offer only certified and verified solutions from reputable brands.
  • Our team provides technical support for all your pH calibration and lab equipment needs.

Let’s help you achieve accurate, reliable, and traceable pH testing for every batch you produce.

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