better specify LoC storing conditions

[soerenthomsen]

Anne comment:

"Which storage conditions? The NED reagent has to be stored at 4°C in dark and have a deadline of 1 month.
The reagents and working standards should be removed after each deployment to perform stability control measurements. The instrument itself should be stored without chemical (reagent, standards, Cd column). The luer lock syringe filter should also be removed and changed."

This relates to post recovery operations / storage.

[soerenthomsen]

Following up to this

purchase vs. prepare reagents

"Or rather prepared… It is recommended that each user conduct its own studies to determine the stability of the reagents and working standards. Need a procedure or already provided by Clearwater?"