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In the Designplan laboratory, we test our luminaires every step of the way, from concept through to completion. We continuously upgrade and improve our luminaires, retesting them throughout their product life cycle. Constant investment in our laboratory helps innovate our lighting solutions in terms of performance and environmental impact.


At Designplan, we take pride in having our own photometry facility, enabling us to swiftly measure new and bespoke luminaires. As the first luminaire manufacturer in the UK to utilise a goniophotometer, we employ a system distinct from conventional arm and mirror structures. This capability is further enhanced by our use of a large integrating sphere.


We offer BIM, IES and LDT files, downloadable from each individual product pages, to support you when creating a lighting design.

IK Testing

The official IK classification scale ends at 20 joules (IK10). However, this is insufficient for testing the durability of our products. Given that the projects involving our products often require them to withstand significantly higher impacts, we have extended the scale up to 250 joules (IK20).

IP Testing

Most of our products have a minimum protection rating of IP65. We rigorously test them in a wet room using a precisely adjustable high-pressure jet for 15 minutes. Additionally, our laboratory simulates continuous rain conditions. For products with exceptionally high protection ratings, we conduct extended tests in a dip tank.

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Corrosion Testing

To simulate the corrosion process, tests are regularly carried out on coated samples. These are continuously sprayed with a salt solution over a longer period of time in a special test cabinet. Inspections are conducted at 240, 480, 720, and 1000 hours for blisters, rust, and cracks. After 1000 hours, samples are dried, inspected, and subjected to a paint adhesion test per ASTM D3359-09 using adhesive tape.

Ligature Resistant Luminaires

Products with ligature-resistant designs are mainly used to prevent self-harm, whether accidental or intentional. In our test laboratory, we test new ligature resistant luminaires based on guidelines from the Building Research Establishment (BRE) in collaboration with the “Design in Mental Health” (DiMHN) network for testing secure health products.

Ligature Resistance Testing

High temperatures and extreme weather

The robust construction of our luminaires ensures they can cope with all types of weather. High ingress protection, corrosion resistant paint, robust steel bodies or LM6 aluminium castings and extrusions are key components of our “robust and durable” ethos.

Our luminaires regularly operate in ambient temperatures ranging from -25°C to 25°C. In some cases our fittings are required to operate in ambient temperatures as high as 50°C. We offer several luminaires tested and proven to withstand regular temperatures of 40° or 50°C. These luminaires are subjected to a thorough assessment process in our in-house testing laboratory.

Our Product Testing Capability


  • Needle Flame Test
  • Glow Wire test
  • Thermal Test
  • Humidity Cabinet
  • Water Test
  • Electrical Test

Suitability Of Materials

  • LED Compatibility Test

Ligature Resistance 

  • Ligature Resistance Test

Photometric Test

  • Integrating Sphere
  • Goniophotometer


  • Pedulum Test
  • Drop Test


  • Salt Spray Chamber
  • Dust Chamber

You can also connect with us on LinkedIn for ongoing updates.