C-FLUOR is one of our submersible instruments that come calibrated right out of the box. In case you lose the original paper that comes with the box, you can find a replacement PDF copy from our website.
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Visit the C-FLUOR instrument page from C-FLUOR Submersible Fluorescence/Turbidity Probes | Turner Designs
You will find a section called Calibration Certificate under Downloads with the below link.
​orders.turnerdesigns.com/cflour/cflour_cert.aspx

If you are having trouble with downloading the certificate, Turner Designs Support can send you a replacement document over email and the Messenger through our website.