SO2 Cal Test

Started manual Cal @ 9:02

@9:13 started ZA cal after flushing line

@10:20 Running ZA through Charcoal filter before using in cal add

@10:32 Zeroing while ZA calibrating

@10:46 Back to normal mode

@15:28 Switched SO2 cal line to 1/8th inch, and connected to ZA, will leave overnight.