Freezer Medium for cDNA clones

Optimized for growth in microtiter plates

(VandenBosch lab - U. of Minnesota; kvandenb@cbs.umn.edu )


Make in 3 parts to avoid problems with precipitation during autoclaving:.

Solution 1:

Tryptone    16g
Yeast Extract    10g
NaCl     5g
Dissolve in H2O, adjust pH to 7.4 with NaOH, bring to final volume of 900 ml with H2O, autoclave.

Solution 2: (This is a concentrated stock)

KH2PO   17.96g
K2HPO4    62.7g
bring to 150 ml with H2O and autoclave.

Solution 3: (This is also a concentrated stock)

NaCitrate     5.0g
MgSO4.7H2O     0.98g
(NH4)2SO4     8.98g
Dissolve and bring to 410 ml with H2O
Add 440 ml glycerol
Autoclave.

To make 1 liter of freezer medium, add 15 ml of solution 2 and 85 ml of solution 3 to the 900 ml of solution 1 and mix well. Add any required antibiotic before dispensing to microtiter plates.

2000.05.26
 
 

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