Preparation SSPE Buffer

This guide describes the preparation of SSPE Buffer at a defined molarity for laboratory use.

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SSPE buffer is commonly used in nucleic acid hybridization experiments.

SSPE Buffer – Composition

NameFormulaConcentrationCAS
Sodium chlorideNaCl150 mM7647-14-5
Sodium dihydrogen phosphateNaH₂PO₄10 mM64-19-7
EDTAC₁₀H₁₆N₂O₈1 mM60-00-4

Sterilization & Storage

  • Sterilization: Autoclave
  • Storage: Room temperature

Tips

  • EDTA (free acid) is extremely difficult to dissolve. It is recommended to prepare an EDTA stock solution first.
  • The use of EDTA solution or EDTA·2Na·2H₂O is recommended.
  • Anhydrous sodium dihydrogen phosphate is highly hygroscopic; avoid prolonged exposure during weighing.
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