<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Thanks, Borries. I hadn’t known that RI effects could be significant in such dilute solutions (0.1%).<div><br></div><div>For the Nanodrop, there is no cuvette, and the path length is 0.030-1.0 mm. I am attaching a description, in case you are interested.</div><div><br></div><div>Jason: For TFA, please do a cuvette measurement blanked against water.<br><div><br></div><div>James<br><div></div></div></div></body></html>