For Chlorophyll, Phycocyanin, Phycoerythrin and Rhodamine ONLY.
• Can be used in place of a primary liquid standard once a correlation between a primary standard and the solid standard is established.
• Can be used to check fluorometer stability and/or check for loss in sensitivity.
• Provides a broad range of very stable fluorescent responses.
• Has an adjustment screw allowing users to set to a desired signal.