orion 4star meter

waterpollutionlaboratory@ · science forum beginner Joined: 05 Dec 2005 Posts: 6

We recently purchased this meter for our lab. We have been using the
chlorine probe with it.Is there anyone else out there who may be using
this meter. I have been using a 0.1 ug/l and a 1.0ug/l standard for my
calibration. I find that the slope is a bit off at times an the lower
standard doesn't read close to the concentration of the standard.Again
you can email me at waterpollutionlaboratory@cityofattleboro.us
thanks

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