AELAB Gloss Meter GM-4 – 45° Integral Type Surface Gloss Measurement Instrument

The AELAB GM-4 Gloss Meter measures medium gloss (45°) with high accuracy. It stores 254 readings, supports USB/Bluetooth output, and features automatic calibration, a rechargeable battery, and a backlit display. It is ideal for quality control.

In accordance with international standard ASTMD523, ASTWD1455, ASTMC346, ASTMC584, ASTMD2457, DIN ENISO2813, DIN67530, ENISO7668, JISZ8741, MFT30064, TAPPIT480, GB9754, GB9754, GB/T13891, GB7706 and GB8807. Its technical parameters conform with JJG696-2002.

⚙️ Design & Construction

The AELAB GM-4 adopts a compact integral-type design optimized for portable gloss measurement. Its 4-digit backlit LCD provides clear visualization in laboratory and field environments. The measurement aperture of 7 × 14 mm (ellipse) and stable optical geometry ensure consistent 45° illumination for GU quantification. The integrated 3.7 V Lithium Ion battery enables extended operation without external power.

🔬 Working Principle / Testing Method

The GM-4 measures reflected light intensity at a fixed 45° geometry using a calibrated optical beam and photodetector. The sensor converts reflected flux into Gloss Units (GU), displaying values with 0.1 resolution. Automatic calibration ensures stability before each measurement. Collected data can be stored in 254 internal memory groups and exported via USB or optional Bluetooth software for QC reporting.

💡 Key Advantages

• Precision ±1.0 GU measurement with ±0.5 GU repeatability
• Automatic calibration for fast deployment in field inspections
• Backlit LCD supports low-light or on-site testing environments
• 254-group data storage for batch or production-line monitoring
• Rechargeable Lithium Ion battery improves long-term mobility
• USB/Bluetooth digital export enhances traceable QC workflow
• Compact 140 × 45 × 75 mm footprint for portable use

🔗 Connectivity & Integration

The AELAB GM-4 provides USB data output and supports optional Bluetooth data transmission. Compatible PC software enables data logging, calibration records, and GLP-oriented documentation.

🧠 Model Insight

🧪 Testing Applications

The AELAB GM-4 is suitable for gloss analysis of coatings, plastics, printing materials, floor finishes, automotive parts, ceramics, and industrial surface evaluation. It supports QC environments, R&D laboratories, material inspection, and manufacturing process control.

Compliance & Quality Assurance

The GM-4 follows ASTM, DIN, ISO, JIS, GB, and TAPPI gloss measurement standards and conforms to JJG696-2002 metrological verification. Every unit undergoes AELAB quality inspection and traceable calibration before shipment.