I. Introduction

The instrument applies to the determination of the color of every type of lubricating oil and other petroleum according to ASTM D1500. During the usage of the measuring instrument, the sample of petroleum is injected to the colorimetric tube. Then the chromaticity and the color number are determined after the sample is compared with the standard color sheet.

II. Main Technical Indicators

Power Supply: 240V,100W as well as the milk-shell bulb with dull-polished lining with the temperature as 2750±50K.

Colorimetric Tube: Colorful flat-bottom glass tube with its inner diameter as Φ32.5～Φ33.4mm and its height as 120～130mm.

Standard Color Disk: 26 light holes with the diameter asΦ14, including 25 of them containing glass sheet of which the color number ranges successively and respectively from 1 to 25. The 26th hole is blank.