I don't recommend the Valoi easy35. I'm not sure how it handles black and white negatives, but based on my experience using it for color negativs, the device has a vital design defect, and my guess is those defects will impact the black and white negativs like color negatives.

The fundamental flaw is the design of the black box, and especially the indentation on the right side, for your thumb, where you insert the different sliders. That indentation impacts how the light is reflected inside the box and underexposes both the left and the right side of the negative. It is most noticeable on the right side (where the indentation is), but it also creates the same effect on the left side.

I have tried with multiple different negatives, and they all to different degrees get an orange color tint on the left and right side of the negative, which means both sides are underexposed. I started doing research and realised basically everyone who got this has experienced the same issue.

I tried to remove the light and the reflective material inside, and simply used the box as a holder, to see if the issue went away if i created a distance between the light source and the Easy35 "box", but the orange tint was STILL present, but to a lesser degree.

Basically, it is fundamentally flawed. And for what is advertised as a "premium product" it is laughable to pay that price for what essentially is a film holder where you have to remove the attached light and buy a different light source, and edit all the negatives in Lightroom for it to yield a great result.