Syringe Dosing Concerns?
I have been designing a simple solution to manually drawing out exact measurements of additives to dose every day. Basically, I will have 4 syringes of additives, and a 5th large syringe of H2O all in line, as in I will have them all connected to a main tube to dose directly into the tank in the outflow of the filter. By the way, the water is to flush out additives still in the tube after dosing the exact amount.
This all sounds fine, until I mention that the syringes are plastic. I plan to keep a week's dosage in them, and I am concerned about the additives reacting with the plastic. I don't think that potassium, iron, phosphorous, or micros will react, but I am also dosing Excel, which according to the bottle is polycycloglutaracetal, a derivative of glutaraldehyde.
In my organic chemistry lab we used plastic pipettes and funnels, but the compounds only came in contact with these for a short period of time.
I am concerned that leaving Excel in a plastic syringe for an extended amount of time may deteriorate the plastic or introduce contaminants from the plastic into the tank.
Does anyone have any insight on this?
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