The LS372 is a 45°/0° portable colorimeter with a 4 mm measuring aperture and a 3.5-inch touchscreen, designed to measure and compare color precisely even in small printed areas (labels, packaging, brochures, etc.). It meets D50 standard lighting conditions, aligning with industry color evaluation practices.
🧪 Key Features
📏 Small-Area Measurement (4 mm Aperture)
The 4 mm aperture enables precise color measurement on small graphic areas such as narrow print swatches, tiny labels, and intricate packaging designs — reducing edge interference and improving accuracy.
🌟 Industry Standard Lighting
Uses D50 standard illumination, which matches standard viewing conditions used in graphic arts and printing for reliable color assessment.
📱 Easy Operation & Smart Display
3.5-inch capacitive IPS touchscreen with intuitive UI makes operation simple without needing many physical buttons.
Language options include English and Chinese.
🎨 Built-In Color Cards & Quick Matching
Includes multiple standard electronic color charts that can match the top 3 closest color codes with high accuracy — ideal for quick color reference and verification.
🧠 Color Difference & Quality Control
Supports color difference comparison using multiple ΔE formulas (ΔEab, ΔEuv, ΔE94, ΔEcmc, ΔE*00, etc.).
You can set thresholds for pass/fail quality control, helping with batch consistency checks.
🎯 Precise Alignment & Stability
Triangular support structure around the measurement hole improves alignment and stability during measurement.
Built-in white calibration board lets you calibrate easily without carrying a separate plate.
📊 Data Management & Connectivity
Stores large amounts of color data locally and supports mobile app and PC software, helping synchronize and manage color databases and generate reports.
🔁 Excellent Consistency
Repeatability is ΔE*ab ≤ 0.03, meaning very stable and repeatable results for quality-critical work.
📊 Technical Specifications
Feature Specification
Optical Geometry 45°/0° (annular illumination, 0° viewing)
Light Source Full-spectrum LED
Spectral Range 400–700 nm (10 nm interval)
Measuring Aperture 4 mm
Measurement Time ~1 s
Display 480×320 IPS touchscreen
Color Spaces CIE Lab, LCh, Luv, Yxy, CMYK, RGB, whiteness & yellowness (multiple indices)
Color Difference Formulas ΔEab, ΔEuv, ΔE94, ΔEcmc (various), ΔE*00
Repeatability ΔE*ab ≤ 0.03
Battery Rechargeable Li-ion (~4000 mAh) ~10,000 tests/charge
Connectivity USB-C, Bluetooth (app sync)
Operating Temp 0–45 °C; 0–85 % RH
Dimensions / Weight ~86 × 62.5 × 158 mm; ~225 g
🛠 Typical Use Cases
✔ Printing quality control — accurately verify colors on printed materials like brochures, booklets, labels and packaging.
✔ Color consistency management — use QC thresholds and built-in color libraries for batch approval and color process control.
✔ Color matching & reference work — quickly match measured colors to stored standards without relying on visual judgment.
📦 What’s Included
LS372 colorimeter unit
USB-C cable
Cleaning cloth
Measurement locating plate
User manual & calibration report
👍 Summary
The LS372 Portable Colorimeter is a high-precision handheld color measurement tool optimized for the printing and packaging industry. Its small 4 mm aperture, D50 lighting standards, and smart touchscreen interface make it ideal for checking color accuracy on small print areas, doing color difference QC, and managing color data efficiently.
