Yes...Got one..thanks :)

https://www.researchgate.net/post/Who_knows_why_the_DNA_concentration_measured_by_a_Nanodrop_is_different_from_the_concentration_measured_by_a_Qubit

I think you can use this two together  (Qubit® 2.0 Fluorometer (Life Technologies) and NanoDrop 2000c). Here Qubit® 2.0 Fluorometer reading is more dependable and OD ratio  260/280 of NanoDrop important for Quality.

The NanoPhotometer is definitely better than the Nanodrop. Most specs on the market including the Nanodrop rely on surface tension because they're creating that liquid column, which needs more sample volume and your sample is completely exposed (think of evaporation). The NanoPhotometer is compressing the sample, much like a microscope slide and a cover slip creating a capillary film, which is independent from surface tension, completely enclosed (no evaporation or contamination) and allows the lowest volume on the market with 0.3ul. So measuring substances that lack surface tension such as proteins, nucleic acids and even organic solvents can be done with ease. Sometimes people tend to forget the importance of the path length used to calculate the concentration (Beer's law). The NanoPhotometer has two fixed path lengths that DO NOT change over time so you're looking at lifetime accuracy and NO MAINTENANCE because no recalibration is necessary! The technology really speaks for itself, so if you're really looking for accuracy these are things you have to factor in.

https://www.implen.de/product-page/implen-nanophotometer-np80-microvolume-cuvette-spectrophotometer/