Certified photometric standard solutions from Merck ensure simple, quick and accurate verification of results from water and wastewater analyses.
Photometric test kits for in-process controls - as well as standard methods in compliance with DIN, ISO, EN, APHA or EPA - can be used to test the quality of water and wastewater simply and reliably.
The methods used are checked constantly to ensure they deliver precise, reproducible results. To attain reliable analytical quality control, users are dependant upon standard solutions that are traceable to globally accepted primary standards.
- Immediate usage
- No dilution necessary
- Certified reference materials
- Standard solutions traceable to primary standards of the National Institute of Standards and Technology (NIST), USA
- Analysis certificate with comprehensive quality documentation
- Declaration of the exact concentration of the solution including the expanded measurement uncertainty
- Diluted and ready-to-use Standard solutions for photometric applications (CRM) traceable to SRM from NIST
One-stop shopping for photometric quality control
Merck now offers new diluted, certified standard solutions in varying concentrations. First off, we are introducing the most significant parameters for water and wastewater analysis such as ammonium, chemical oxygen demand (COD), nitrate, nitrite, total phosphorus, total nitrogen and sulfate.
The new standard solutions enable exact verification of all photometric rapid tests (for example, Spectroquant® from Merck or other test kits from other suppliers) as well as standard methods. With this, Merck offers a complete photometric system – a perfect match and convenient - all from one source.
Certified standard solutions: ready-to-use and traceable to SRM from NIST
The certified, NIST-traceable standard solutions for photometric applications from Merck are ready to use. Time-consuming diluting is a thing of the past and a potential source of errors is thereby also omitted. The new standard solutions make the monitoring of test results simple and accurate.
The analysis certificate for standard solutions documents all batch-specific and analysis-relevant data such as exact concentration and expanded measurement uncertainty. Most importantly, it provides users with the certitude that the diluted, certified standard solutions from Merck are traceable directly to primary standard reference materials from NIST. This ensures that quality standards are comparable internationally. The certificate for each product can be accessed easily online at any time.