Environmental Express Buffer Solution, pH 4.01; 500 mL

Environmental Express Buffer Solution, pH 4.01; 500 mL

This lab‑grade pH 4.01 buffer provides a stable, NIST‑traceable calibration point for pH meters requiring low‑range accuracy. Manufactured under ISO 9000 quality guidelines, it supports reliable calibration in environmental, industrial, and laboratory applications where precise pH measurement is essential.

Key Features

• Lab‑grade buffers available in multiple volumes to reduce waste and support various throughput levels.
• Color‑coded and clearly labeled for easy identification in busy labs.
• Unopened shelf life of 2 years.
• NIST/USA buffer value of pH 4.01 traceable to NIST standard reference materials.

More About This Item

pH 4.01 is a common calibration point for low‑range pH meters. All Environmental Express pH buffer solutions are manufactured under ISO 9000 quality guidelines and traceable to NIST standards (for meters with 0.01 resolution). A pH/temperature table is printed on each label to support accurate calibrations.

The pH 4.01 buffer solution is colored red for quick visual reference. It is sold in individual 500‑mL bottles and available in cases of 12. If unopened, shelf life is 2 years. Store buffers away from direct sunlight.

Specifications

• Catalog Number: 00654-00
• Buffer Value: pH 4.01
• Volume: 500 mL
• Color: Red
• Description: Buffer Solution, pH 4.01; 500 mL