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Amazon.com: Replacement Bulb for WELCH ALLYN HPX 06500, HPX08500, MacroView 23810 by Technical Precision - 2.7 W, 3.5 V Halogen Otoscope Lamp - 1 Pack : Industrial & Scientific
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HQRP 4-Pack 3.5V 2.5W Halogen Bulb for Welch Allyn 21700 20000 20200 20201 20202 21700 22811 25000 - Walmart.com
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Welch Allyn Bulb For Diagnostic Otoscope 2.5v EaPart No. 03400-U : Industrial & Scientific - Amazon.com
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