Section
Acceptance & QC
Incoming inspection, colour consistency, ageing tests — the checks that catch a bad batch before it is installed rather than after.
Burn-in: what a 72-hour soak test can and cannot proveWhy early failures cluster, what a pre-installation soak test actually catches, why accelerated ageing cannot validate a lumen maintenance claim, and a practical protocol for buyers without a laboratory.
Colour consistency: why same-batch fittings still do not matchWhat an SDCM step actually bounds, why an ANSI chromaticity bin is not the same thing, the four stages between LED binning and installed colour where consistency is lost, and a wall test that settles an argument in twenty minutes.
Incoming inspection: seven checks that catch a substituted batchWhat to test when luminaires arrive rather than after they are installed — sampling across the delivery, the electrical, photometric, colour, flicker, thermal and mechanical checks, and a blank worksheet to record them against.