Pilkington Spectrum is a Windows-based glass performance model which enables you to quickly and efficiently calculate key properties of insulating glass units without the need to construct and measure them. You can use Pilkington Spectrum to provide the following information:

• Light and solar properties (transmittance, reflectance, absorptance, g value, etc.).
• Centre pane U_g-value.
• Sound insulation values.
• Ultra violet (uv) transmittance and colour rendering index (R_a).
• Other properties (e.g. pendulum body impact resistance, fire resistance, resistance to manual attack, etc.).