Beta-Caryophyllene 50ppb New bag 07.09.2009. Modified pre-exp.

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Presentation transcript:

Beta-Caryophyllene 50ppb New bag

Modified pre-exp

Immediately after starting the DMPS software

Stop led to this part of the code

Restarted PC and the software worked ok but 20 min later it happened again!!

The problem with lack of nucleation! It turned out that the new piece of tubing installed this morning between the VOC bulb and the chamber was not TEFLON and it was PLASTIC! It melted down upon heating the VOC bulb and had many holes in it.. Almost none of the first two 50ppb b- caryo injections made it into the chamber! The old piece of TEFLON was re-installed and made tight!

We finally have nucleation!!

Modified post exp