LR and HPLC Grade chemicals difference

What is the difference between LR Grade and HPLC grade?

Can i use HPLC Grade insted of LR grade ?

The difference between LR Grade and HPLC Grade is filtration, HPLC Grade solvent are filtered by 0.22 micron membrane filter.
You can use HPLC Grade solvent instead of LR Grade but not LR Grade instead of HPLC Grade.

OK u use hplc grade instead of LR grade because hplc grade or pure than LR grade chemicals.