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This is a replacement air powered stirrer for only legacy (pre-2021 built) photochemical reactor models.
Beginning in 2021, the GFS-376 was replaced with the BEL-376 in new reactor builds. If you have a photochemical reactor that was built in 2021 or newer and need a replacement air powered stirrer, the correct part number that you need is BEL-376.
The Magnetic Stirrer is designed specifically for use with the Rayonet© Models RPR-100 and RPR-200.
It requires a source of compressed air of 1-2 PSI.
If you have any hesitation on which air powered stirrer model, please feel free to ask us using the Contact Us page.