Very funny! Of course I was referring to the http://biology.bard.edu/ferguson/course/bio141/Lab/Lab_Appendix_1.pdf" [Broken] procedure...I don;t know what we store it though I will find out tomorrow. it is stored vertically.
Did you record the slope for the electrode during your calibration procedure?I think maybe the elctorde is wrong actually, when we make a measeurement it takes absolutly for ever to stabablise. It will keep climbing really slowly until it reaches a plateau but this can take 10-15 minutes, why the delay?