Cocktail sticks and toothpicks supplier

Chi-kuang Wen ckwen at
Tue Dec 17 12:22:35 EST 1996

Paul N Hengen (pnh at wrote:
: Chris Boyd (chrisb at wrote:

: > However inexpensive these plastic loops might be (and the same goes for
: > yellow tips), they are 100 to 1000 times as expensive as toothpicks. 
: > And they screw up the environment more when discarded!

: So, nobody can really confirm that wooden toothpicks are a problem for
: screening colonies by PCR????

I have been using wooden toothpicks to pick up the colonies for PCR, and
have no problem.  The only thing must be remembered is that the wooden tooth-
picks suck the PCR reaction solution if you leave them in the tubes too long.
I always pick a colony and resuspend in the PCR reaction quickly and discard
the toothpick.

I have tried the toothpicks from two different supplies and never got troubles.


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