CT-25 Portable Transmittance Tester UV VL IR Meter 365nm

The CT-25 Portable Transmittance Tester is a compact, pocket-friendly instrument designed to measure the transmittance of UV, visible, and infrared light with speed and accuracy. Whether you're testing coatings, films, glass, or optical components, this meter delivers quick results in the field or lab. Its parallel light path supports sample thickness up to 13 mm, and a data lock function preserves results even after removing the sample.

Key features include a full-color display, fast test time of less than 1 second, and a compact 115 x 70 x 14 mm body with a non-slip grip for outdoor use. The CT-25 runs on a rechargeable lithium battery, with USB charging—no more battery replacements in the field. Manual + Automatic calibration makes it easy to achieve reliable results in any working environment.

Benefits & Tips

• Measure UV transmittance at 365 nm, visible transmittance at 530 nm, and infrared transmittance at 940 nm (and 1400 nm where applicable) to assess material performance across the spectrum.
• Use the data lock function to freeze test results on the display for quick documentation and traceability in busy workflows.
• Take measurements anywhere thanks to its portable size and light weight—ideal for field testing, on-site quality checks, or quick material screening.

Product Specifications

• Model: CT-25
• Geometry: Transmission
• Calibration: Manual + Automatic
• Test Index: Ultraviolet (365 nm); Visible (380–760 nm, conform to CIE photopic function standard); Infrared (940 nm, 1400 nm)
• Test Accuracy: ±2%
• Display Resolution: 0.10%
• Sample Thickness: 13 mm (max)
• Instrument Size: 115 × 70 × 14 mm
• Test Time: Less than 1 s
• Battery Volume: 750 mAh
• Power Supply: 5V / 1A
• Screen: Full-color display, 135 × 240, 1.14 inch
• Recharging Interface: USB
• Working Temperature: 0–40 °C
• Humidity: < 85%, no condensation
• Standard Accessories: USB cable, Lanyard, operate manual

Package Includes

• USB cable
• Lanyard
• Operate manual

Warnings & Reminders

Keep the device within the operating range (0–40 °C) and humidity below 85% with no condensation. Charge the battery via USB before field use. For consistent results, perform manual or automatic calibration as needed and use the data lock feature to preserve test data after testing.

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