Drowning in water testing regulations?
Inorganic Ventures’ Platinum Cobalt Color Standard (PT-CO-500ML) is your lifeline!
Accurate, traceable standards are essential for regulatory compliance. If you don’t start with an accurately calibrated CRM, you can’t have confidence in your data.
The color of water and wastewater is often evaluated by determining the level of contaminants present and acts as a general indicator of water quality. For many years, the term “water white” was considered an adequate measurement of solvent color. Different expressions for defining “water white” were developed, making it clear that a more precise color standard is needed.
This need has been met using a colorimetric scaling method that measures the yellow tint in liquids compared to a qualified reference solution. Using UV/Vis spectroscopy, rather than a visual comparison, allows an analyst to more accurately and precisely determine present impurities, which is necessary for virtually colorless samples. Therefore, it is essential that the quality of the reference materials used match the high-quality performance of UV/Vis spectroscopy.
The use of the accurate starting materials (potassium chloroplatinate/cobalt chloride hexahydrate) required by the ASTM method, combined with Inorganic Ventures’ NIST traceable instrument verification methods, ensures credible, repeatable and reliable results.
While different approaches exist in the market for formulating and certifying Pt-Co color standards, the IV product starts with the right materials, follows the prescribed method and backs it up with chemical expertise, integrity and support. Here’s how you can stay afloat as water testing methods evolve.
|Platina Cobalt Color Units||500 CU||Nominal (from ASTM D1209-05 method and standard method 2120C)||N/A *|
|Cobalt, Co||250||ICP Assay||3113|
|Platinum, Pt||500||ICP Assay||3140|
*Measured absorbance data determined using a spectrophotometer verified with NIST SRM 2034 and NIST SRM 931h for wavelength and absorbance are provided on the Certificate or Analysis. *Absorbance data obtained using an optical glass cell with a 50mm path length per Standard Methods 2120C and ASTM D1209-05-05.
- Lot to lot consistency and guaranteed stability
- Eliminates the time of preparing 500 CU in-house
- Traceable to NIST
- Second source available upon request
- Packaged in our TCT which offers up to 5-year shelf life and eliminates concerns about shipping and storage