Needle Holders

Installation Instructions for the LI-6400 Portable Photosynthesis System

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The 6400-34 Needle Holder Kit contains several foam needle holders (LI-COR part #6564-169) that can be used with LI-6400 leaf chambers to measure conifer needles. The needle holders can be used with the 6400-07 Needle chamber, 6400-08 Clear Bottom chamber, 6400-11 Narrow Leaf chamber, or the 6 cm2 Standard leaf chamber. The needle holders are placed along the short axis of the aperture (on the lower half of the chamber), where they can be used to hold as many as 5 needles in place during measurement. Peel the adhesive backing from the needle holders and press firmly into place, adjacent to the chamber gasket, as shown.