WXG-4圓盤旋光儀是測定物質旋光度的儀器。通過對樣品旋光度的測量，可以分析確定物質的濃度、含量及純度等。廣泛應用于制藥、藥檢、制糖、食品、香料、味精以及化工、石油等工業生產，科研、教學部門，用于化驗分析或過程質量控制。

WXG-4圓盤旋光儀特點：

采用目視瞄準，手動測量的方法，使用簡便。

主要技術參數：

◆測測模式：旋光度

◆光源：鈉光燈+濾色片，波長589.44nm

◆測量范圍：±180°

◆度盤格值：1°

◆度盤游標讀數值：0.05°

◆放大鏡放大倍數：4×

◆試管：200mm、100mm

◆電源：220V±22V,50Hz+1Hz

◆儀器尺寸：540mm×220mm×380mm

◆儀器重量：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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