Model :GM-4
The AELAB GM-4 Gloss Meter provides precise 45° surface gloss measurement for coatings, plastics, and industrial materials. With ±1.0 GU accuracy, 0.1 resolution, and 254 data groups, the GM-4 supports USB/Bluetooth output, automatic calibration, and a 3.7 V Lithium Ion battery, ensuring stable and repeatable gloss analysis in laboratory and field quality control.
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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.
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.
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.
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 | Specifications |
|---|---|
| GM-4 | 45° measuring angle, 0.1 ~ 200 GU range, ±1.0 GU accuracy, 254 data groups, 305 g |
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.
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.
| Display | 4 Digits Backlit LCD |
| Measuring Angle | 45° |
| Range | 0.1 ~ 200 Gloss Units |
| Gloss Units | GU |
| Accuracy | ±1.0 GU |
| Resolution | 0.1 |
| Repeatability | ±0.5 GU |
| Measuring Area | 7 × 14 mm (Ellipse) |
| Data Memorized | 254 Groups |
| Operating Conditions | Temp: 0 ~ 40°C Humidity: < 85% RH |
| Power Supply | 3.7 V Lithium Ion Rechargeable Battery |
| Dimensions | 140 × 45 × 75 mm |
| Weight | 305 g (Including Batteries) |
| Standard Accessories | Main Unit Holder with Calibration Standard Optical Cleaning Cloth Carrying Case (B04) Operation Manual |
| Optional Accessories | USB Data Cable with Software Bluetooth Data Adapter with Software |
