Growth Technology pH Buffer 4

The Growth Technology pH Buffer 4 solution is a stable, fixed-pH calibration fluid with a pH value of 4.00, specifically formulated for calibrating pH meters, pens, probes and controllers used in gardening, hydroponics, aquaponics and nutrient solutions. Calibrating your pH testing equipment with a known reference solution ensures consistent and reliable pH readings every time.

Why Growers Need pH Buffer 4

Accurate pH measurement is critical for plant health. If your pH meter isn’t reading correctly, you risk nutrient lock-out, reduced uptake of key elements like nitrogen and potassium, and poor growth performance. Regular calibration with pH Buffer 4 helps:

• Ensure accurate readings – Keeps your pH meter precise and trustworthy
• Improve nutrient uptake – Correct pH levels help plants absorb nutrients efficiently
• Maintain system consistency – Especially important in hydroponics, coco, or soil growing
• Extend equipment life – Regular calibration prevents sensor drift over time

 How It Works

1. Pour a small amount of pH Buffer 4 into a clean container.
2. Immerse your pH meter probe into the solution.
3. Adjust the meter until it displays pH 4.00, the known value of the buffer.
4. Rinse and repeat with a neutral buffer (like pH 7) if doing two-point calibration.
5. Use confidence-worthy pH measurements on your nutrient solution.

📌 Tip: Always discard buffer solution after use to avoid contamination.

Product Highlights

• Stable calibration fluid with fixed pH 4.00
• Available in handy 300ml bottles
•  Suitable for all standard pH meters, pens and probes
• Essential tool for hydroponics and indoor growing setups
• Trusted by growers for consistent accuracy 

 Perfect For

Gardeners, hydroponic growers, aquaponic systems, commercial cultivators, and hobby growers who want precision and reliability from their pH testing equipment.