Frequently Asked Questions (FAQs)

Which tests are available?

We can perform the following tests: Photometric testing (LM79), Emergency Luminaire Classification, In-Situ Temperature Measurements (ISTM), Lamp Circuit Power (LCP), Thermal/Endurance Test. Click here to view details of our services.

How do I request a quote?

You can fill out the the test request form. If you are unsure of what you want or have any questions, you can contact us.

What equipment do you use for testing?

All our tests are carried out using calibrated equipment and are performed in environmentally controlled rooms. Our main equipment includes: Type-C goniophotometer, gonio-spectroradiometer, power meters, thermocouples, thermometers, thermal imaging camera and a data logger.

What is your turnaround time like?

We will try our best to minimise the time taken to complete the required work. The turnaround time will depend on the type of test and our job schedule. Our official quote will include an estimated turnaround time. You can contact us if you require further information.

Do you email the finalized reports or send a hard copy?

You will be sent an electronic PDF soft copy via e-mail. All photometric tests will also include a photometric data file in the IES (2002) format , which will be sent with the soft copy of the final report. Upon request we can also send a hard copy of test results.

Do you have examples of your test reports?

For what the test reports will look like and what information will it include, please contact us.

Would it be possible for you to include extra information in your reports?

We can add or remove items in reports provided it does not invalidate or exceed the scope of the test or our Scope of Accreditation. If you have a specific request to have a report modified before being issued, please feel free to contact us to discuss your requirements.

What is more important: CRI or R9?

The Colour Rendering Index is derived from fifteen test colours, labelled R1 to R15. CRI (Ra) value is an average value based on colour ranges R1 to R8 and doesn’t include the remaining colour ranges R9 to R15.

The CRI value represents a luminaire’s ability to show an object’s true natural colours when compared to a reference light source. CRI has a maximum value of 100. The higher the CRI number, the better the luminaire can display an object’s true natural colours.

Though not included in the calculation of CRI, the R9 special test colour sample value represents how accurately a light source will reproduce strong red colours. R9 has a maximum value of 100. The higher the R9 number, the better the luminaire can display an object’s red colours.

A higher CRI (Ra=90+) combined with a high R9 (50+) value creates a powerful representation of the object’s actual colour. A luminaire with a high CRI but low R9 value may cause your environment appear to be dull and a person look pale.

So, CRI and R9 both are equally important; the higher the values, the more natural the colours appear.

Contact Light Science now and start testing your products for Ra and R9.