Description
Product Overview
The ORAPXI pH Buffer Calibration Solution Kit is a comprehensive set designed for precise pH meter calibration, featuring 15 sealed powder packs—5 each for pH 4.00, 7.00, and 10.01—and 3 reusable 250ml bottles. This kit provides the equivalent of 15 bottles of buffer solution, ensuring long-term usability with an accuracy of ±0.01. Manufactured by JiNan Huiquan Electronic Co., Ltd, it has a model number of pH 4.00/7.00/10.01 and package dimensions of 9.76 x 5.2 x 2.52 inches, weighing 5.29 ounces. First available in February 2025, it ranks #61 in Chemical Buffers and has earned a 4.7-star rating from 33 customer reviews, highlighting its reliability in industrial and scientific applications.

Usage
This pH calibration solution is versatile for various environments, including scientific laboratories, pool and aquarium maintenance, hydroponic systems, and educational settings. It is ideal for professionals and hobbyists who require accurate pH measurements to monitor water quality, chemical reactions, or plant growth conditions. The kit supports frequent calibration needs in research, agriculture, and home testing, ensuring dependable readings across different pH meters for consistent results in critical applications.
Why Choose Us
ORAPXI stands out with its high-precision calibration powders that deliver ±0.01 accuracy, backed by individually sealed packets for extended shelf life and contamination prevention. The inclusion of reusable bottles reduces waste and cost over time, while compatibility with most pH testers on the market ensures broad usability. With positive customer feedback and a focus on quality manufacturing, this kit offers a reliable, eco-friendly solution that meets rigorous standards for industrial and scientific use.
Key Features
- Includes 15 pH calibration powder packs for pH 4.00, 7.00, and 10.01 with ±0.01 accuracy
- Comes with 3 reusable 250ml bottles for easy mixing and long-term use
- Individually sealed powders ensure freshness and prevent degradation
- Compatible with a wide range of pH meters for versatile applications
- Simple preparation by dissolving powder in pure, filtered, or distilled water
FAQ
How do I prepare the pH calibration solution?
Pour one powder packet into a provided 250ml bottle, add pure, filtered, or distilled water, and shake until fully dissolved. The solution is ready for immediate use in calibrating your pH meter.
What pH meters is this kit compatible with?
This ORAPXI kit works with many pH testers available on the market, including those used in labs, pools, and hydroponics. For optimal results, refer to your meter’s manual for specific calibration instructions.
How long can I store the prepared solution?
For best accuracy, use the solution shortly after preparation. The sealed powder packs, however, can be stored long-term in a cool, dry place without losing efficacy.
Is this kit suitable for aquarium water testing?
Yes, it is ideal for aquarium maintenance, providing precise pH readings to help maintain healthy water conditions for fish and plants. Always calibrate your meter regularly for reliable results.
What is the accuracy of the pH buffers?
The buffers offer an impressive ±0.01 accuracy, ensuring reliable calibration for sensitive measurements in scientific and industrial settings.




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