pH Buffer Calibration Solution Kit 4-Pack - NIST Traceable

In this review the pH Buffer Calibration Solution Kit 4-Pack is evaluated for laboratory and field calibration needs; it is aimed at technicians, researchers and instructors who need reliable, ready-to-use standards. The bottom line: this kit stands out because it combines three common buffer values with an electrode storage solution in individually bagged 250 mL bottles that are lot numbered and expiration dated, making it straightforward to meet routine calibration and traceability requirements. The inclusion of a free certificate of analysis and clear color coding makes the kit especially useful where documentation and quick identification matter.

Key Features

• Color coded bottles: Each buffer and the storage solution are color coded so users can identify pH 4.00, pH 7.00, pH 10.00 and the electrode storage bottle at a glance, reducing mixups during calibration routines.
• Individually bagged 250 mL bottles: The poly bottles arrive sealed and individually bagged in convenient 250 mL size for single-user or small-batch lab use without transferring large volumes.
• NIST traceable standards: Lot numbering and traceability information accompany the solutions, and a free certificate of analysis is provided for labs that require documented calibration standards.
• Expiration dated: Each bottle is marked with an expiration date so labs can manage inventory and avoid using degraded buffers.
• Includes electrode storage solution: The kit supplies a dedicated electrode storage solution to help maintain electrode performance between uses and extend probe life.

Who It's For

The kit is best for pharmaceutical, academic, research and industrial labs that perform regular pH meter calibration and need clearly identified, documented reference solutions. It fits well where traceability and paperwork are required, such as quality control benches and teaching labs that rotate users and need sealed, labeled bottles.

Users who need larger volumes for high-throughput production or who require custom pH values not included in this set may need a different product or bulk solutions; similarly, those who prefer powdered concentrates to reduce shipping weight should look elsewhere.

Pros & Cons

Pros

• Ready-to-use, color coded buffers reduce preparation time and measurement errors.
• Free certificate of analysis and lot numbering support compliance and record keeping.
• Individually bagged 250 mL bottles are convenient for single-user workflows and reduce cross-contamination risk.
• Includes electrode storage solution to protect probes between measurements.

Cons

• 250 mL bottle size is limited for very high-volume labs that may require larger containers.
• The kit includes fixed pH values (4.00, 7.00, 10.00) so users needing other specific buffers must purchase additional items.

Specifications

Product type	pH buffer calibration solution kit
Contents	pH 4.00, pH 7.00, pH 10.00 buffers and electrode storage solution
Container size	250 mL poly bottles (8.4 fl oz) each
Packing	Individually bagged bottles
Traceability	Lot numbered, expiration dated with free certificate of analysis
Intended users	Pharmaceutical, academic, research and industrial labs

Our Verdict

The pH Buffer Calibration Solution Kit 4-Pack is a practical choice for labs that need reliable, documented calibration standards in a convenient size. Its color coding, NIST traceability and included electrode storage solution deliver good value for routine calibration tasks, while the 250 mL bottles suit small to medium workloads rather than high-volume production.

Frequently Asked Questions

Are the buffers ready to use?
Yes, the kit contains prepared pH 4.00, pH 7.00 and pH 10.00 buffers in ready-to-use liquid form.

Is a certificate of analysis included?
A free certificate of analysis and traceability information are provided for each lot to support documentation needs.

What size are the bottles?
Each solution is supplied in an individually bagged 250 mL (8.4 fl oz) poly bottle.