7 Dry Flo
WEIGH DRY FLO
When storing blank data, the quantity of Dry Flo used in each run must be entered. This quantity is
called the Chamber/Medium weight. This step is not necessary when performing a single blank run
embedded in a sample or calibration run.
Accurately weighing the Dry Flo is critical for obtaining acceptable results using stored
blank data. A precision analytical balance accurate to 1 mg is required. If this level of
accuracy cannot be achieved, the technique of using stored blank data may not be
satisfactory.
It is recommended weighing Dry Flo in the analysis chamber. This reduces the possibility of error in
transferring Dry Flo from a weighing container to the chamber.
If it is necessary to transfer the Dry Flo from a weighing container to the chamber, ensure that no Dry
Flo is lost in the process. Avoid splashing. Any Dry Flo clinging to the weighing container or flared
end of the chamber must be brushed back into the chamber. A small amount of Dry Flo residue
remaining in the measuring container will affect analysis results.
When prompted, enter the Chamber/Medium weight. Enter either the weight of the chamber plus
Dry Flo or the weight of the Dry Flo only. Including or excluding the chamber’s weight does not affect
analysis calculations, however the same method for both the blank and sample runs for a given
sample must be used. If, for example, include the chamber’s weight in the blank run, then include the
chamber’s weight in the sample run.
7 - 4
GeoPyc 1365 Operator Manual
136-42800-01 (Rev -) — Dec 2016
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