In industries where optical clarity and transparency are critical, such as pharmaceuticals, plastics, glass, and food packaging, precise measurement tools are essential for quality control and regulatory compliance.
The BTM-1 Transparency Tester from us is a state-of-the-art instrument designed to deliver accurate, repeatable, and user-friendly transparency measurements for a wide range of materials.
This article provides an overview of the BTM-1, including its features, applications, scientific principles, and a detailed step-by-step usage guide to help users maximize its potential.
How Does the BTM-1 Transparency Tester Work?
Scientific Principles
The BTM-1 operates on the fundamental principles of optical transparency measurement:
- Light Transmission: A stable light source emits a beam through the sample. The amount of light that passes through (transmittance) is measured by a detector.
- Scattering and Haze: The instrument can assess how much light is scattered at wide angles (haze), which affects the material’s clarity.
- Calibration: The device is calibrated using a reference standard to ensure accuracy and repeatability.

Key scientific concepts:
- Reflection, Absorption, Transmission: The instrument measures the amount of light reflected, absorbed, or transmitted by the sample.
- Objective Measurement: Digital sensors and standardized procedures eliminate subjective human error, yielding reliable and reproducible results.
Step-by-Step Usage Guide
1. Setup
- Unpack and Assemble: Remove the BTM-1 from its packaging and assemble any detachable components as per the user manual.
- Positioning: Place the device on a stable, level surface in a clean, dust-free environment.
- Power Connection: Connect to the appropriate power supply (AC220V/110V as required) and ensure proper grounding.
2. Calibration
- Prepare Calibration Standard: Use a reference sample with known transparency, often air or a certified transparent material.
- Insert Reference Sample: Place the calibration standard in the sample chamber.
- Initiate Calibration: Enter calibration mode as per device instructions, usually via a button or menu.
- Record Baseline: The device measures the reference and sets the baseline for 100% transmission.
- Verify Calibration: Remove the reference and confirm the instrument returns to baseline when empty.
3. Sample Preparation
- Cleanliness: Ensure the sample is free from bubbles, debris, or fingerprints.
- Volume: Fill the glass tube to the required 500 mL level, avoiding overfilling or underfilling.
- Temperature: Allow the sample to reach room temperature for consistent results.
4. Measurement Procedure
- Insert Sample: Place the prepared sample into the measurement chamber.
- Close Chamber: If applicable, close the lid to prevent ambient light interference.
- Start Measurement: Press the measurement button or select the appropriate menu option.
- Read Results: The digital display will show the transparency value, e.g., % transmittance.
- Record Data: Log the measurement or export data if supported.
- Repeat: For multiple samples, clean the chamber between tests to avoid cross-contamination.
5. Post-Measurement
- Clean Instrument: Wipe down the sample chamber and surfaces.
- Power Down: Turn off the device if not in continuous use.
- Store Properly: Keep the instrument in a dry, dust-free environment.
Industries and Applications
The BTM-1 Transparency Tester is a versatile instrument used across a broad spectrum of industries:
1. Pharmaceutical Industry
- Softgel Capsule Quality Control: Ensures uniformity and detects shell irregularities.
- Glass and Plastic Containers: Test vials, ampoules, and sampling tubes for clarity and contamination.
2. Plastics Industry
- Plastic Films and Sheets: Measures light transmittance and haze for packaging and optical components.
- PET Preforms: Evaluates clarity before bottle production.
3. Glass Industry
- Glass Bottles and Containers: Ensures clarity for pharmaceutical, food, and beverage packaging.
- Specialty Glass: Used in automotive, aerospace, and architectural applications.
4. Food and Beverage Industry
- Packaging Materials: Test transparency for product visibility and consumer appeal
5. Optical and Photographic Industries
- Lenses and Films: Measures transparency and haze for high-performance optical devices
6. Automotive and Aerospace
- Windscreens and Windows: Ensures safety and visibility standards
7. Research and Development
- Material Science: Supports innovation in transparent materials and coatings.
If you want to purchase the BTM-1 Transparency Tester or get more information about its features and pricing, please contact our team. We will provide you with the best solution.
Get in touch now and take your quality control to the next level!
FAQs
Q: What materials can the BTM-1 Transparency Tester measure?
A: The BTM-1 can measure the transparency of gelatin, plastics, glass, films, liquids, and more, making it suitable for pharmaceuticals, packaging, optics, and research applications.
Q: How often should I calibrate the BTM-1?
A: Calibration should be performed before each new series of measurements, after moving the instrument, or if readings appear inconsistent.
Q: What is the measurement range and accuracy?
A: The BTM-1 offers a test range of 20–500 mm with an accuracy of ±5 mm.
Q: Is the BTM-1 easy to maintain?
A: Yes, routine cleaning and periodic calibration are typically all that is required. For complex issues, professional servicing is recommended.
