Using our APHA/Platinum-Cobalt Color Analyzer System to automate this measurement within a process eliminates the visual judgment of a technician and delivers online real-time process control information to the process operators.
The APHA/Platinum-Cobalt Color Analyzer System utilizes our multi-wavelength ClearView db filter photometer analyzer platform. It may be configured for either one (1) or two (2) independent sample monitoring points. The ClearView db analyzer is configured with application-appropriate wavelengths to measure the APHA/Platinum-Cobalt color of the sample. The analyzer employs a dual-beam design – meaning; the system has an continual internal optical reference check that allows it to self-compensate for signal variation due to non-sample conditions. This ultimately provides the system with long term stability. The final product is a total APHA/Platinum-Cobalt Color System that measures the color variation without interference from other factors.
The APHA/Platinum-Cobalt color scale is described in ASTM D1209 “Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)”. This ASTM method is an off-line manual laboratory method. The original test design required an observer to compare the color of a product to a known standard, and then judge the “color.” The APHA/Platinum-Cobalt color scale ranges from 0 to 500. The lowest value of 0 is referred to as water white. value of 500 is distinctly yellow.
Complete APHA/Platinum-Cobalt (Hazen) Color Analyzer System:
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