please help me about unit conversion in lb

dear readers
I am a student and I try to understand and use lb method.
in anb.f code dt and dx are one and also in succi book these value are one
but in lbunits.pdf from Jonas Latt dt and dx are not one and they are for Re computation
I try to match these work with each other but I have confused
can anyone help me about understanding lb units conversion?

Please have a thorough look at the forum. There have been many questions similar to yours. I think you will find an answer.

It’s hard for you to understand,but it’s also very easy.
except the advice from Timm ,
or you can read the paper:

Modeling DNA in confinement: A comparison between the brownian dynamics and lattice boltzmann method

                                                                 goog bless