Description
Specifications Table
Product Name – Platinum cobalt color 250 (HAZ 250) Color standards platinum cobalt color (Pt-Co, Hazen)
Quantity/Pack Size – 1000 ml
Form – Liquid solution
Grade – Analytical
Application – Colorimetric analysis, water testing, chemical research
Product Overview
The platinum-cobalt (Pt-Co) color standard, also known as the Hazen color scale, is a highly stable and reproducible solution designed for precise colorimetric measurements in laboratory settings. This analytical-grade standard is formulated using platinum and cobalt chlorides to create a consistent yellow-to-brown color scale, with the 250 Hazen unit concentration representing a mid-range reference point. The solution is manufactured under strict quality controls to ensure batch-to-batch consistency, eliminating variability that could affect experimental results. Its chemical stability makes it resistant to degradation from light exposure or temperature fluctuations, maintaining accuracy over extended storage periods. The 1000 ml packaging provides sufficient volume for frequent calibration needs while minimizing contamination risks through its airtight sealing. This standard complies with international color measurement protocols, including those specified by ASTM and ISO standards, making it compatible with most spectrophotometric equipment. The solution’s neutral pH and low impurity profile prevent interference with sensitive analytical procedures, while its water-based formulation ensures easy cleanup and disposal according to standard lab protocols.
FAQs
1. What is the shelf life of this platinum-cobalt color standard?
The solution maintains its color stability for 24 months from the date of manufacture when stored in its original sealed container away from direct sunlight and extreme temperatures.
2. Can this standard be used with automated colorimeters?
Yes, the solution is compatible with most modern colorimeters and spectrophotometers, including automated systems, as it meets the absorbance specifications required by standard colorimetric protocols.
3. How does this compare to APHA color standards?
The Pt-Co/Hazen scale is chemically identical to the APHA color scale, with the same platinum-cobalt formulation, so they can be used interchangeably in most applications.
4. What precautions should be taken during handling?
While non-toxic, the solution should be handled with standard lab precautions including gloves and eye protection to prevent skin or eye irritation from prolonged exposure.
5. Is recalibration required after opening the bottle?
No recalibration is needed if the bottle is properly resealed after each use, though it’s recommended to verify the standard against a fresh reference if stored for more than 6 months after opening.
