Product Overview

Summary: This Light Transmission Analysis and Measurement Standard Operating Procedure provides a clear, repeatable method for accurately measuring and reporting light transmission through materials. Designed for Australian laboratories and manufacturing environments, it helps standardise testing, support product compliance, and deliver reliable data for design, quality, and regulatory decisions.

This SOP sets out a structured, end‑to‑end process for conducting light transmission analysis on materials such as glass, plastics, films, coatings, glazing products and optical components. It defines how samples are prepared, how instruments are calibrated and operated, and how results are recorded, interpreted and reported. By standardising these steps, the procedure ensures that measurements are consistent across operators, sites and time, supporting robust product development and reliable quality control.

For Australian organisations, reliable light transmission data is critical to demonstrating performance claims, meeting customer specifications, and supporting compliance with relevant building, glazing, lighting and product standards. This SOP helps reduce variability in test results, minimises rework due to inconsistent methods, and provides a defensible technical record that can be referenced in audits, certifications and customer queries. It is particularly valuable for teams working with energy‑efficient glazing, UV‑blocking films, safety glass, solar control products and any application where accurate optical performance data underpins commercial decisions.

Key Benefits

• Standardise light transmission testing methods across laboratories, shifts and sites.
• Improve accuracy and repeatability of measurement results for critical optical properties.
• Support compliance with relevant Australian and international product and building standards.
• Streamline training for new technicians with clear, step‑by‑step instructions and acceptance criteria.
• Provide traceable documentation to support audits, certifications and customer technical enquiries.

Who is this for?

• Laboratory Technicians
• Quality Assurance Managers
• R&D Scientists
• Optical Engineers
• Production Managers
• Technical Services Managers
• Regulatory Affairs Specialists
• Laboratory Supervisors

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions and Abbreviations (e.g. Tvis, Tsol, UV transmission)
• 3.0 Roles and Responsibilities
• 4.0 Applicable Standards and Reference Documents
• 5.0 Equipment, Instruments and Calibration Requirements
• 6.0 Sample Selection, Identification and Preparation
• 7.0 Environmental and Test Conditions (temperature, humidity, stray light control)
• 8.0 Instrument Setup and Verification Checks
• 9.0 Step‑by‑Step Light Transmission Measurement Procedure
• 10.0 Data Recording, Calculations and Acceptance Criteria
• 11.0 Quality Control, Repeatability Checks and Out‑of‑Spec Results
• 12.0 Documentation, Reporting Format and Record Retention
• 13.0 Handling of Non‑Conformances and Investigation Process
• 14.0 Training, Competency and Authorisation Requirements
• 15.0 Review, Audit and Continuous Improvement of the Procedure

Legislation & References

• AS/NZS 1680.1: Interior and workplace lighting – General principles and recommendations
• AS/NZS 2208: Safety glazing materials in buildings
• AS/NZS 4666: Insulating glass units
• AS 1288: Glass in buildings – Selection and installation
• AS/NZS ISO/IEC 17025: General requirements for the competence of testing and calibration laboratories
• AS/NZS ISO 9001: Quality management systems – Requirements