20210206 collagen

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  • Took collagen out from freezer at 10:50

Calculating volumes for aliquoting

  • concentration in vials: c= 5 mg/ml
  • Thin coating = 5 ug/cm^2
  • Area of coating: 2-5 cm^2 per network
  • Mass of collagen: m= 5*5 = 25ug
  • Volume of undiluted collagen: V = m/c = 0.025 mg/ 5 mg/ml = 0.005 ml = 5 ul, which is 1/1000 of a vial.
 It is completely unrealistic to handle such small volumes
  • If I divide the vial volume into 25 x 200 ul it should give a reasonable amount of aliquots for thin coating


Diluting and dispensing

  • Prepare sterile 17.5M acetic acid stock solution
  • Dilute 1:1000 with sterile, distilled H2O