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- Posts: 6
- Joined: Wed Aug 08, 2018 12:05 am
It is a 6 port diverter which is attached to the velos pro mass spec. I have tried every port with new fittings and tubing with the same result. I changed the initial waste to detector time and also took it off but it is still there. I changed the sample delay setting also, even taking it off entirely. I have taken the port apart and cleaned it with methanol. I'm not sure if I'm setting up something wrong in my method parameters (XCalibur software) or if it is a hardware/cleaning problem. Also completely bypassing the diverter (column to mass spec) will get rid of it but I need the diverter for the method.
MPH A is 0.1% formic in water starts at 95%
MPH B is 0.1% formic in ACN starts at 5%