ASTM D7843 Membrane Patch Colorimetry

KN-7843 Membrane Patch Colorimetry

Overview

KN-7843 Membrane Patch Colorimetry conforms to ASTM D7843 Standard Test Method for Measurement of Lubricant Generated Insoluble Color Bodies in In-Service Turbine Oils using Membrane Patch Colorimetry. Insoluble deposits are extracted from an in-service turbine oil sample using a 47mm, 0.45μm membrane nitrocellulose patch. The color of the patch is then analyzed using a spectrophotometer and the results are reported as a △E value in the CIELAB scale.

Features

1. Using a camera for precise positioning, or using lighting for positioning; this tester fully considers the needs of users, adheres to humanized design, and innovates camera framing and lighting positioning technology. Users can choose to use it according to their needs Only take about 60~180s to finish the test

2. The colorimeter adopts automatic black and white correction and is completed during startup. This function eliminates the tedious manual black and white correction while ensuring the high accuracy of the instrument, greatly improving the convenience of using high-precision color difference meters. Each time, just start the color difference meter to measure.

3. The standard deviation of this colorimeter is △E * ab<0.06 (the average of 30 measurements after calibration with a standard whiteboard)

4. The measuring aperture of this colorimeter is Φ 8mm, Φ4mm and extended caliber (Φ8mm) (optional), suitable for different demands

5. The colorimeter adopts international standard light sources D65, D50, and A, and users can choose according to their demands

6. The colorimeter has multiple color spaces, and users can choose to display according to their needs; And can display various data such as whiteness, yellowing, color fastness, etc., with a wide range of applications

Technical parameters