Inorganic Ventures' Water Hardness Standard is a 500 mL certified reference material set in a water (tr. nitric acid) matrix for stability. This standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. One year Expiration Date.
| Size: | 500 mL |  |
| Matrix: | Water (tr. Nitric Acid) (H2O / HNO3) |
| Starting Material: | Multiple materials |
| Dilution: | — |
| Documentation: | Certificate | MSDS |
>td>3.5-150 mg/L>td>0.9-50 mg/L>td>45-575 mg/L