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Color Measurement for Liquids |
| Posted By : Howill@aol.com |
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Electronic Color Measurement with HOWILL INSTRUMENTS Haze_N
2000 & Haze_N
3000 Measurement of color in liquids historically has been a subjective test relying on the operators’ visual acuity and personal experience. In recent years attempts have been made to automate the method by using spectrophotometer analysis. The automation has not been well received by some in the industry due to the perception that the results are unstable from measurement to measurement and the equipment does not hold calibration. HOWILL INSTRUMENTS has developed instrumentation designed specifically for the measurement of color in a liquid. The Haze_N 2000 & Haze_N 3000 color instruments make use of a longer path length (10cm) than typically used in a color measurement device. By employing innovative new technology the Haze_N 2000 & Haze_N 3000 can effectively reduce or eliminate the interference caused by low levels of turbidity*. By using a longer sample path and a measurement specific optical design the Haze_N 2000 & Haze_N 3000 color instruments offer resolution of 0.1 color unit and accuracy to the nearest color unit or better. The Haze_N 2000 & Haze_N 3000 are single parameter devices. They require no measurement specific set up for use. They are designed for ease of use with no complicated procedures to learn. Maintenance is simple, just clean the cuvette with a mild acid solution, with the Haze_N 3000 the cleaning is automatic with a recirculation of the cleaning solution followed by a DI water flush. Calibration is performed by pouring a solution through the flow assembly or by placing a sealed standard in the optical well. Depending on the sample to be measured the need for filtering color samples may be reduced or eliminated entirely. By eliminating the need for sample filtering the measurement can be performed much more quickly and economically. Even when using a pre-filtered sample the measurement process using the integrated pour through assembly is much easier and faster for the operator. In addition to speeding up the measurement process the use of the pour through assembly on the Haze_N 2000 and the continuous flow system used with the Haze_N 3000 provides increased repeatability since the optical system is stationary throughout the calibration and measurement process. By keeping the optics the same for both calibration and measurement, the potential for a difference in the glass or other surface of the optical assembly changing and thereby affecting the reading is significantly reduced. For more information contact: HOWILL INSTRUMENTS, Inc. 1219
Cleburne Drive / Fort Myers, FL 33919-1608
/ USA Phone: (941) 275-9062 / Fax: (941) 275-8455 / e-mail: howill@aol.com Visit
our web site at http://members.aol.com/howill/index.html *Every
treatment process is different and individual treatment plant results
will vary based on the material comprising the turbidity.
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