**GD-0168 ASTM D1500 Petroleum Products Color Tester, Oils Colorimeter**
**Model No.:** GD-0168
**Light Source:** 220 V, 100 W
**Shipping Size:** 49*47*42 cm, 21 kg
**Warranty:** 1 Year
**OEM Service:** Available
**Trademark:** Gold
**Transport Package:** Standard Wooden Case
**Specification:** ISO Certificate
**Origin:** Chongqing, China
**HS Code:** 9031809090
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The **GD-0168 Portable Lubricating Oils Colorimeter** is a reliable and accurate instrument designed to determine the color of various lubricating oils and other petroleum products in accordance with the Chinese industrial standard **SH/T 0168-92**, which outlines the test method for the color of petroleum products.
This device is widely used in laboratories and industrial settings where precise color measurement is essential for quality control. The testing process involves filling the sample into a color comparison tube and comparing its color against a set of standard color samples to determine the corresponding color number. An attached color chart is provided to help users match the color numbers between the instrument and the standard **GB/T 6540**.
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### **Main Technical Specifications**
- The **GD-0168** consists of a **standard color dial**, **observation lens**, **light source**, and **color comparison tube**.
- The light source is a **220 V, 100 W** bulb with a temperature of **2750±50 K**, emitting a white, milky light. The light passes through **milk white glass** and **sunlight filtering glass**, ensuring that the spectrum closely resembles natural daylight.
- The light is split into two parallel beams using a **plane reflection mirror** and **prism**, which evenly illuminate the sample in the color comparison tube and the standard color dial.
- There are **26 holes (Φ14 mm)** on the color dial. **25 of them** are fitted with standard color glasses ranging from **color numbers 1 to 25**, while the **26th hole is left blank** for reference. A **hand wheel** on the right side of the device allows users to rotate the color dial and select the appropriate color during testing.
- The **color comparison tube** is a **Φ32 mm, 120–130 mm high** non-colored, flat-bottom glass tube. It is inserted into the instrument through a lid located at the top.
- The **observation lens** includes a **concave mirror** and **separated bar**, enabling users to view two semicircular colors simultaneously. The **right half** displays the standard color, while the **left half** shows the sample. The optical system allows for **adjustable lighting and focus**, making it user-friendly and efficient.
This colorimeter is an essential tool for industries that require consistent and standardized color measurements, especially in the production and quality assurance of lubricants and other petroleum-based products. With its **ISO certification** and **standard wooden packaging**, the **GD-0168** ensures compliance, durability, and ease of use in both laboratory and field environments.
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