What is the composition of buffer OCL?

The composition of Buffer OCL is:

  • 10 mM Tris-Cl pH 7.5
  • 140 mM NaCl
  • 5 mM KCl 1% Nonidet P-40*

Add before use (optional): 1000 U/ml RNase inhibitor; 1 mM DTT

*Nonidet P-40 is no longer manufactured. It can be replaced with Nonidet P-40 Substitute (Fluka, cat. no.74385) or Igepal® CA-630 (SIGMA, cat. no. I 3021).

Buffer OCL is used for direct mRNA purification from the cytoplasm of cultured cells with the Oligotex Direct mRNA Kits.

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