Philips MasterColour Evolution CDM-T 70W/930
In 2013 Philips introduced the MasterColour Evolution family of lamps, as a premium category offering ultimate efficacy and lumen maintenance still further ahead of the Elite series. Owing to the much higher cost, the Elite range was still offered in parallel. The first types to be launched were 20W and 35W ratings, based on the same unsaturated vapour concept as the Elite LightBoost lamps.

In 2014 the Evolution range was expanded to include a 50W lamp. Then followed this 70W rating which shares the same high performance but is of a standard saturated vapour design with the usual protruding plug end seals. Nevertheless, the performance of this 70W lamp is truly remarkable - achieving a phenomenal efficacy of 120 lm/W, with its lifetime further extended to 20,000 hours. As such this model represents the highest performance ever achieved by a low wattage metal halide lamp, and brings the lowest cost of ownership for lighting of retail spaces.

Interestingly this particular lamp was manufactured after the European Commission required the phase-out of radioactive components of electric lamps - and as such its arc tube does not contain the usual dose of radioactive Krypton-85 gas. To enable reliable starting it therefore makes use of a UV-enhancer miniature discharge lamp to pre-ionise the gas filling of the arc tube. Whereas most lamps use quartz or glass-bodied UV-enhancers, Philips developed a tiny ceramic capsule for this purpose. It is filled with argon and contains one internal electrode, and is capacitively driven via a second external electrode coiled around the capsule, and connected in parallel with the arc tube. Regrettably as part of Philips' cutbacks, Evolution lamps were dropped in 2017.
Manufacturer: Philips Lighting
Lamp Power: 73 Watts
Lamp Current: 0.76 Amps
Lamp Voltage: 96 Volts 5 kV ignition pulse
Cap Type: G12 Ceramic + NPB pins
Bulb Type: T-19 T-6 in eighths/inch
Bulb Finish: Clear UV-Stop Quartz
Electrodes: Single Coil Thoriated tungsten
Arc Length: 9 mm
Atmosphere: Outer: Hard Vacuum
Luminous Flux: 8,800 lm (@ 100h)
Luminous Efficacy: 120.5 lm/W (@ 100h)
Colour Temperature & CRI: CCT: 3000K CRI: Ra=90, R9=30
Chromaticity Co-ordinates: CCx: 0.426 CCy: 0.388
Rated Lifetime: 20,000 hours (to L85F50)
Warm-up & Re-strike Time: 3 minutes (to 90% flux) <15 minutes
Burning Position: Vertical ± 60°
Nominal Length: 103 mm 4 inches
Light Centre Length: 56 mm 27/32 inches
Factory: Turnhout Belgium
Date of Manufacture: 2017 February November Date Code: 7B
Original Value: €50.95 (2016)
References: 1) Philips Catalogue, 2016 NL.
2) Philips Brochure, Mastercolour CDM, 2013 EU.
3) Philips Brochure, Mastercolour CDM, 2015 EU.
4) Philips Brochure, Mastercolour CDM Evolution, 2013 EU.
5) Philips Datasheet, Mastercolour CDM Evolution, 2017 EU.
6) Philips Presentation, Masterolour CDM Evolution 50W & 70W Launch, 2014 April.