| Attribute | Specification |
|---|---|
| Manufacturer | METTLER TOLEDO |
| Material Number | 51350018 |
| Product Type | Technical pH buffer solution |
| Nominal pH | 4.01 |
| Purpose | Calibration and verification |
| Physical Form | Liquid |
| Colour | Red |
| Principal Buffer Component | Potassium hydrogen phthalate |
| Water Solubility | Completely miscible |
| Bottle Volume | 250 mL |
| Bottles per Pack | 6 |
| Total Pack Volume | 1.5 L |
| Measurement Uncertainty | ±0.02 pH |
| Traceability | Traceable to primary standards selected by NIST |
| Certificate | Certificate of Analysis available online |
| Shelf Life | 36 months |
| Sterility | Non-sterile |
| GHS Classification | Not classified as hazardous under the cited SDS |
| Manufacturer Packaging | 6 × 250 mL bottles |
| Econo Green Selling Unit | Not publicly verified |


METTLER TOLEDO Technical Buffer pH 4.01
Part Number: 51350018
Ready-to-use pH 4.01 technical buffer for calibrating and verifying pH electrodes and measurement systems. The red liquid buffer is traceable to primary reference standards selected by NIST and has a stated uncertainty of ±0.02 pH. Supplied as six 250 mL bottles.
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