目视圆盘旋光仪,WXG-4圆盘旋光仪广泛应用于制药、药检、制糖、食品、香料、味精以及化工、石油等工业生产，科研、教学部门，用于化验分析或过程质量控制。

WXG-4圆盘旋光仪是测定物质旋光度的仪器。通过对样品旋光度的测量，可以分析确定物质的浓度、含量及纯度等。广泛应用于制药、药检、制糖、食品、香料、味精以及化工、石油等工业生产，科研、教学部门，用于化验分析或过程质量控制。

WXG-4圆盘旋光仪特点：

采用目视瞄准，手动测量的方法，使用简便。

主要技术参数：

◆测测模式：旋光度

◆光源：钠光灯+滤色片，波长589.44nm

◆测量范围：±180°

◆度盘格值：1°

◆度盘游标读数值：0.05°

◆放大镜放大倍数：4×

◆试管：200mm、100mm

◆电源：220V±22V,50Hz+1Hz

◆仪器尺寸：540mm×220mm×380mm

◆仪器重量：5kg

WXG-4 Circular Polarimeter Instruction Manual

*(Model: WXG-4)*

1. Introduction

The WXG-4 is a precision optical instrument designed to measure the optical rotation of optically active substances (e.g., sugars, essential oils, pharmaceuticals). It is widely used in chemistry, food science, and pharmaceutical industries for quality control and research.

2. Technical Specifications

· Measurement Range: ±180°

· Accuracy: ±0.05°

· Light Source: Sodium lamp (589.3 nm, D-line)

· Tube Length: 200 mm (standard)

· Minimum Readability: 0.05°

· Power Supply: AC 220V ±10%, 50Hz

3. Components

1. Polarimeter Tube: Holds the sample solution.

2. Optical System: Includes polarizer, analyzer, and quartz wedge compensator.

3. Eyepiece: For visual observation of the optical field.

4. Scale Vernier: Allows precise angle readings (main scale + vernier).

5. Sodium Lamp: Monochromatic light source.

6. Power Switch & Knobs: For zero adjustment and measurement.

4. Operating Instructions

4.1 Preparation

1. Place the instrument on a stable, vibration-free surface.

2. Turn on the sodium lamp and allow it to warm up for 5–10 minutes.

3. Fill the polarimeter tube with distilled water (or blank solvent) to calibrate zero point.

4.2 Zero Adjustment

1. Look through the eyepiece and rotate the analyzer until the two halves of the field are equally bright.

2. Record the vernier scale reading as the zero point.

4.3 Sample Measurement

1. Fill the clean, dry polarimeter tube with the sample solution (avoid bubbles).

2. Insert the tube into the instrument.

3. Rotate the analyzer until the field brightness is balanced again.

4. Read the rotation angle from the scale (main scale + vernier).

o Clockwise (dextrorotatory, "+") or counterclockwise (levorotatory, "-").

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