3kw Medium Pressure Mercury UV Lamp for Tap Water and Pure Water Purification Water Treatment Sterilization - China UV Lamp, Medium-Pressure UV Lamp | Made-in-China.com
Lighting-Gallery.net - My lights/Philips 400W MA/V Medium Pressure mercury vapour lamp Lit
Lighting-Gallery.net - High Pressure Lamps/Medium Pressure Mercury Lamp
RadTech International NA - Guide to UV Measurement