Black anodized aluminum spacers are available in three sizes for use with 1, 2, and 5mm path length cells, supporting them in a normal 12.5 x 12.5mm holder where there is no cell holder path length adjustment facility.
SPA-1: for 1mm pathlength cells
SPA-2: for 2mm pathlength cells
SPA-5: for 5mm pathlength cells
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