| Manufacturer: | Philips |
| Model: | Master SOX-E 18W |
| Application: | Security Lighting |
| Wattage: | 18W |
| Diameter (max): | 50mm |
| Length: | 200mm |
| Tube Length: | 180mm |
| Bulb/Tube material: | Inner: Soda-Lime glass. Outer: Glass, indium tin oxide IR Reflective coating applied to inner surface. |
| Colour Temperature: | 1700K |
| Peak output wavelength: | 589nM |
| Total light output: | Unknown |
| Rated lifetime: | Unknown |
| Cap: | B22 |
| Operating voltage: | Unknown (to be measured) |
| Operating current: | Unknown (to be measured) |
| Warmup/restrike time: | 15 minutes/instantaneous |
| Cost (original): | Unknown |
| Value (at time of writing): | £12.28 as of Q4 2005 from BLT Direct. |
| Place of manufacture: | United Kingdom |
| Date of manufacture: | August 2005 (H5?) |
| Current Status: | Working |
The smallest of the widely used SOX lamps is this 18W rating (there was a 10W one, but they only really saw use in photographic dark room lamps and are very rare). This is a typical early 2000s example.

Philips Master SOX-E 18W Low Pressure Sodium Lamp - General overview

Philips Master SOX-E 18W Low Pressure Sodium Lamp - Detail of lamp cap

Philips Master SOX-E 18W Low Pressure Sodium Lamp - Detail of arc tube support/heat reflective disc

Philips Master SOX-E 18W Low Pressure Sodium Lamp - Detail of lamp cathodes

Philips Master SOX-E 18W Low Pressure Sodium Lamp - Shown alight and fully run up

Philips Master SOX-E 18W Low Pressure Sodium Lamp Packaging

Philips Master SOX-E 18W Low Pressure Sodium Lamp - Showing size of lamp

Philips Master SOX-E 18W Low Pressure Sodium Lamp - Detail of text printed on lamp

Philips Master SOX-E 18W Low Pressure Sodium Lamp - Close-up of discharge tube

This page last updated:
19th June 2023: Changes to page formatting to improve readability on mobile devices, also some background page code changes to improve search engine behaviour.