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Philips 321521 90-watt T15 SOX90 Low Pressure Sodium HID Light Bulb - High Intensity Discharge Bulbs - Amazon.com
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Philips 327817 35-watt T15 SOX35 Low Pressure Sodium HID Light Bulb - High Intensity Discharge Bulbs - Amazon.com
![SOX Sodium, LPS or low pressure sodium lamp warming up. The lamp gradually turns from red to orange as the neon discharge warms the sodium metal up Stock Photo - Alamy SOX Sodium, LPS or low pressure sodium lamp warming up. The lamp gradually turns from red to orange as the neon discharge warms the sodium metal up Stock Photo - Alamy](https://c8.alamy.com/comp/2C6G108/sox-sodium-lps-or-low-pressure-sodium-lamp-warming-up-the-lamp-gradually-turns-from-red-to-orange-as-the-neon-discharge-warms-the-sodium-metal-up-2C6G108.jpg)
SOX Sodium, LPS or low pressure sodium lamp warming up. The lamp gradually turns from red to orange as the neon discharge warms the sodium metal up Stock Photo - Alamy
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