Product Description
Lab-Grade pH Calibration Solution Bundle for Accurate pH Measurement
The Milwaukee pH 4.01 & 7.01 Calibration Solution Bundle provides everything you need for precise pH meter calibration. This professional-grade bundle includes MA9004 (pH 4.01) and MA9007 (pH 7.01) buffer solutions, each certified to ±0.01 pH accuracy, eliminating the inaccuracies associated with mixing your own buffers.
Key Benefits
Lab-Grade Accuracy: Certified to ±0.01 pH standard for reliable calibration
Complete Calibration Kit: Includes both pH 4.01 and pH 7.01 solutions for 2-point calibration
Ready to Use: Pre-mixed solutions eliminate measurement errors from DIY mixing
Generous Volume: 230 mL bottles provide multiple calibrations
Sealed for Freshness: Light-resistant bottles with air-tight, tamper-proof caps
Universal Compatibility: Works with all pH meters and electrodes
Why Regular Calibration Matters
pH probe calibration is essential for optimal performance and measurement accuracy. Calibration should be performed at least once a month, or any time your readings become suspect. Regular calibration with certified buffer solutions ensures your pH measurements remain accurate and reproducible, extending the life of your electrode.
Ideal Applications
Perfect for laboratories, hydroponics systems, aquariums, water quality testing, food and beverage production, wastewater treatment, swimming pools, and any application requiring accurate pH measurement and regular meter calibration.
Technical Specifications
Product Codes: MA9004 (pH 4.01) & MA9007 (pH 7.01)
pH Values: 4.01 @ 25°C and 7.01 @ 25°C
Accuracy: Standard ±0.01 pH
Bottle Size: 230 mL each
Quantity: 2 bottles (1 x pH 4.01, 1 x pH 7.01)
Packaging: Light-resistant bottles with tamper-proof caps
Certificate of Analysis: Not included
How to Use
Calibration is simple and fast. Open the bottle, pour the buffer solution into a clean beaker or container, and insert your pH tester or electrode. Follow your meter's calibration procedure to complete the 2-point calibration using both pH 4.01 and pH 7.01 solutions. For best results, calibrate at room temperature (25°C) and use fresh buffer solutions.
Professional Features
Lab-grade certified buffer solutions (±0.01 pH accuracy)
Pre-mixed for convenience and accuracy
Light-resistant bottles prevent degradation
Air-tight, tamper-proof caps maintain solution integrity
Generous 230 mL volume per bottle
Ideal for 2-point calibration (pH 4.01 and 7.01)
Compatible with all pH meters and electrodes
Calibration Best Practices
Calibrate your pH meter at least once per month
Calibrate more frequently if readings become suspect
Use fresh buffer solutions for each calibration
Rinse electrode with distilled water between buffers
Calibrate at room temperature (25°C) when possible
Store buffer solutions in sealed bottles away from light
Package Includes
1 x MA9004 pH 4.01 Calibration Solution (230 mL)
1 x MA9007 pH 7.01 Calibration Solution (230 mL)
Made in USA by Milwaukee Instruments - trusted worldwide for reliable pH measurement solutions.
