Wash Buffers:
0.2M Sodium Cacodylate Buffer:
• 4.28g Sodium Cacodylate
• 100 mL DH20
• Adjust pH as needed for sample.
0.2M Sorensen’s Buffer:
• 25 mL Sorensen’s Buffer (purchased from EMS- Ft. Washington, PA in premixed form or
see recipe below)
• 25 mL DH20 (Note: one can dilute this buffer with DH20 further if needed.)
• Adjust pH to 7.0 or 7.2
Recipe:
• pH 7.2: Add 72 mL 0.2M Dibasic Sodium Phosphate (35.61 g/L) to 28 mL 0.2M Monobasic
Sodium Phosphate (31.21 g/L)
• pH 7.4: Add 81 mL 0.2M Dibasic Sodium Phosphate (35.61 g/L) to 19 mL 0.2M Monobasic
Sodium Phosphate (31.21 g/L)
Fixatives:
2.5% Glutaraldehyde in 0.1M Buffer:
• 10 mL 25% Glutaraldehyde
• 50 mL 0.2M Sorensen’s or Cacodylate buffer at required pH
• 40 mL DH20
Make fresh before use and store at 4C – use within 2 weeks