Growth Technology pH Buffer 4 and 7 300ml

Growth Technology pH Buffer 4 and 7 is a practical calibration kit for keeping your pH meter accurate and dependable during routine nutrient and water testing.

  • Includes 1 x 300ml pH Buffer 4 and 1 x 300ml pH Buffer 7
  • Designed for calibrating pH meters with known fixed pH solutions
  • Helps maintain ongoing meter accuracy with regular use
  • Suitable for routine use in hydroponic and horticultural systems
  • Useful for growers checking nutrient solution and irrigation water pH
  • A handy choice to keep alongside your pH meter and storage solution
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🌱 Growth Technology pH Buffer 4 and 7 300ml — Guide and Product Information

Accurate pH calibration for reliable readings

Growth Technology pH Buffer 4 and 7 is a simple but essential calibration kit for pH meters. Each solution is made to a known and fixed pH, allowing you to calibrate your meter correctly and help maintain consistent accuracy over time. For growers working with nutrients, reservoirs, feed tanks and irrigation water, regular pH calibration is an important part of dependable crop management.

This kit contains one 300ml bottle of pH Buffer 4 and one 300ml bottle of pH Buffer 7, giving you the key reference points commonly used when calibrating handheld and portable pH meters.

Why regular pH meter calibration matters

pH meters can drift over time through normal use, storage conditions and repeated testing. Using fresh buffer solution helps confirm that your meter is reading correctly, so you can make better decisions when adjusting feed strength and nutrient balance. In practical day-to-day growing, that means more confidence in the readings you rely on.

  • Known fixed pH solutions for calibration
  • Supports routine pH meter maintenance
  • Helps improve confidence in test readings
  • Suitable for hydroponic and horticultural monitoring

Kit contents and key features

This calibration kit is supplied as a twin set, making it convenient for growers who want both commonly used calibration points in one pack.

  • 1 x 300ml pH Buffer 4
  • 1 x 300ml pH Buffer 7
  • Suitable for regular calibration schedules
  • Straightforward to use alongside compatible pH meters

Suitable applications

Growth Technology pH Buffer 4 and 7 is suitable for growers using pH meters in hydroponic systems, propagation areas, grow rooms, greenhouses and general horticultural setups. It is useful wherever nutrient solution, reservoir water or irrigation water needs to be monitored accurately.

If you are looking for more products in this area, browse our Nutrient and PH Management range. For compatible testing equipment, you may also find the Essentials Handheld pH Meter or the Aqua Master Tools P50 Pro pH Temp Meter useful. To help maintain probes between uses, see the Growth Technology pH Probe Refill and Storage Solution.

For more general growing advice, read our guide to boosting plant nutrition with advanced grow kit techniques.

Technical Specifications

Product:
Growth Technology pH Buffer 4 and 7 300ml

Product Type:
pH calibration buffer solution kit

Category:
Nutrient and PH Management

Use:
Calibration of pH meters using known fixed pH solutions

Application:
Hydroponics, horticulture, nutrient solution testing and water testing

Contents:
1 x 300ml pH Buffer 4
1 x 300ml pH Buffer 7

Size:
300ml bottles

Ideal Uses

  • Routine calibration of handheld pH meters
  • Checking meter accuracy before testing nutrient solutions
  • Maintaining dependable pH readings in hydroponic systems
  • Supporting regular monitoring in grow rooms and greenhouses

Setup and Usage Tips

Use clean containers and avoid contaminating the buffer solutions during calibration. Follow the calibration instructions provided by your pH meter manufacturer, as procedures can vary slightly between models. For best practice, calibrate your meter regularly, especially if it is used often or has been stored for a period of time. After calibration, proper probe care can help maintain accuracy between checks.

If you also monitor nutrient strength, you may want to pair your pH tools with an EC meter such as the AQUALINE EC TRUNCHEON.

Frequently Asked Questions

What is this product used for?
This kit is used to calibrate pH meters so they continue to provide accurate readings when testing water or nutrient solutions.

What does the kit contain?
It contains 1 x 300ml bottle of pH Buffer 4 and 1 x 300ml bottle of pH Buffer 7.

Why should I calibrate my pH meter regularly?
Regular calibration helps correct normal meter drift and supports more reliable readings over time.

Is this suitable for hydroponic systems?
Yes, it is well suited to hydroponic and general horticultural use where accurate pH monitoring is important.

Can I use this with different brands of pH meter?
It is designed for calibrating pH meters using standard buffer solutions, but you should always check your meter instructions for compatibility and calibration procedure.

Do I need anything else for pH meter care?
Many growers also keep a probe care product on hand, such as storage or refill solution, to help maintain probe condition between uses.

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