Reliable Calibration with pH 4 Buffer Solution
Ensure accurate pH measurements in your water analysis routine with the ASTRAL pH 4 Buffer Solution. Specially formulated for cleaning and calibrating electrodes, this ready-to-use solution guarantees precision and stability for all standard pH meters used in pools, spas, and laboratory testing.
What is pH 4 Buffer Solution?
The pH 4 Buffer Solution is a stable aqueous solution with a certified pH value of 4.00 at 20°C. Used as a reference point in pH calibration, it ensures your electrode systems remain reliable and precise over time. It is one of three buffer values offered by ASTRAL to cover the full calibration spectrum: pH 4 (acidic), pH 7 (neutral), and pH 9 (alkaline).
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Pool electrode cleaning and calibration liquids
€8.82
Reliable Calibration with pH 4 Buffer Solution
Ensure accurate pH measurements in your water analysis routine with the ASTRAL pH 4 Buffer Solution. Specially formulated for cleaning and calibrating electrodes, this ready-to-use solution guarantees precision and stability for all standard pH meters used in pools, spas, and laboratory testing.
What is pH 4 Buffer Solution?
The pH 4 Buffer Solution is a stable aqueous solution with a certified pH value of 4.00 at 20°C. Used as a reference point in pH calibration, it ensures your electrode systems remain reliable and precise over time. It is one of three buffer values offered by ASTRAL to cover the full calibration spectrum: pH 4 (acidic), pH 7 (neutral), and pH 9 (alkaline).
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Key Benefits
- Accurate and stable pH reference for calibration procedures
- Pre-mixed and ready to use — no dilution or preparation needed
- Compatible with all glass and ISFET pH electrodes
- Ideal for professional and domestic water analysis
- Maintains instrument performance and measurement reliability
Technical Features
- Buffer Value: pH 4.00 ±0.02 at 20°C
- Type: Pre-prepared liquid solution
- Packaging: Bottle with secure cap
- Use: Electrode calibration and cleaning
- Code: 70947
Main Functions
This solution is essential for maintaining accurate and consistent pH measurements in water treatment and analysis equipment. Regular calibration with pH 4 buffer prevents drift and extends the life of your electrodes by ensuring reliable data collection.
How to Use It
- Rinse the electrode with distilled water before calibration.
- Immerse the electrode in the pH 4 buffer solution.
- Wait for the reading to stabilize and adjust the meter as instructed by the manufacturer.
- Repeat using pH 7 or pH 9 buffers for two- or three-point calibration.
Why Choose This Product?
This pH buffer is an essential tool for any water analysis system where accuracy matters. Whether you're maintaining a pool, operating a water treatment facility, or managing lab equipment, this solution offers a consistent, affordable, and trustworthy way to verify your readings.
Safety, Storage & Eco Info
- Store tightly closed in a cool, dry place away from direct sunlight.
- Do not mix with other chemicals or contaminants.
- Keep out of reach of children.
- Dispose of according to local regulations for non-hazardous chemical waste.
FAQs
- Q: How often should I calibrate my pH meter?
A: It is recommended to calibrate before each measurement session or at least weekly. - Q: Can I reuse the buffer solution?
A: No. Always use fresh solution for each calibration to ensure accuracy. - Q: Does it expire?
A: Yes. Always check the expiration date printed on the bottle for guaranteed stability.
Available Variants
- pH 4 Buffer Solution – Code 70947
- pH 7 Buffer Solution – Code 70948
- pH 9 Buffer Solution – Code 70949
- Redox 460 mV Calibration Solution – Code 70950
Legal Note
Manufactured according to laboratory-grade quality control. Conforms to typical standards for electrochemical measurement solutions. No safety data sheet required under current EU regulations for non-hazardous liquids.
Key Characteristics
- Certified pH value of 4.00 at 20°C
- Immediate-use liquid formulation
- Ensures accurate pH meter calibration
- Essential for electrode maintenance
- Safe storage and non-toxic handling
Not sure if this solution is compatible with your meter? Please email us at or include your equipment details when ordering. We’ll contact you before shipping if there’s any uncertainty.
70947-ANALISI
57 Items
Data sheet
- Product Type
- Salt chlorinator systems
- Shipping_label
- Normal
Specific References
- EAN13
- 0652733252326
- MPN
- 70947-ANALISI
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