I used 1X TBST for blot washing but I want to try PBS also please tell me which one good.
It depends a lot on the antibody, TBS (0.1M TRIS, 0.15M NaCL pH 7.5) is supposed to be a better buffer and is easier to prepare. PBS is based on NaPO4. There are several receipes for both.
Your question is fully discused here:
https://www.researchgate.net/post/Western_blotting-using_BSA_or_milk_And_TBS-T_or_PBS-T11
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