GroLine pH 4.01 Calibration Buffer (120 mL)

Ensure accurate and dependable pH calibration with this high-quality pH 4.01 buffer solution. Each 120 mL bottle is hermetically sealed in tamper-resistant packaging, complete with a lot number and expiration date for traceability and peace of mind. Crafted in accordance with strict ISO standards and traceable to NIST reference materials, it delivers precision with an accuracy of ±0.02 pH at 25 °C. A convenient temperature compensation chart is printed directly on the label for easy adjustments across temperature variations. The dye-free, color-coded solution is safe for electrode integrity and includes a Certificate of Analysis for quality assurance.

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Key Features

• High-precision calibration: ±0.02 pH accuracy at 25 °C

• NIST-traceable production, supplied with Certificate of Analysis

• Temperature compensation chart included on label

• Hermetically sealed and tamper-resistant packaging with lot and expiration details

• Color-coded, dye-free formula—safe for electrode junctions

• Long unopened shelf life (up to 5 years)