Filter Holder, Ref.

SKU: 305-6706-00 Category: Tags: ,


Filter Holder, 305D, Reference Channel


  • 305D
  • 307
  • Astoria2 photometer

Replacement filter holder for your Reference Channel–i.e. if yours is cracked, the Allen-wrench screws are lost or no longer work. Please note that the Reference Channel generally uses a 400X Neutral Density Filter or an Interference Filter (in special cases ONLY), so make sure the ND or IF are in the holder prior to use.

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