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The Hach pH Buffer Solution Kit includes three 4L bottles of pH 4.01, 7.00, and 10.01 solutions, each color-coded and NIST-traceable for ±0.02 pH accuracy. Packaged airtight to maintain freshness, this kit is designed for precise calibration of Hach and other pH meters across diverse water quality applications.

| ASIN | B00R3EFVSC |
| Best Sellers Rank | #184,569 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #79 in Chemical Buffers |
| Brand Name | HACH |
| Container Type | Bottle |
| Customer Reviews | 4.4 4.4 out of 5 stars (12) |
| Included Components | Lab |
| Item Form | Liquid |
| Item Highlight | pH 4.01, pH 7.00 & pH 10.01, NIST-Traceable, pH Electrode Calibration, Lab & Field Use, Airtight Packaging |
| Manufacturer | Hach |
| Model Number | 2507200 |
| Part Number | 2507200 |
| Unit Count | 1 Count |
| Volume | 4 liters |
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