136 / 620
Step2: Make up the volume with DI water up to 20 mL. Add g of DI water and record the
total weight. Cap the bottle and shake until well dissolved. Reconstituted powder samples
must be used immediately. Shake for 2-3 min.
Step3: Transfer 12 mL of it to a 50 mL Amicon Ultra-15 Centrifugal filter device and
cap. Centrifuge for 60 min at 5000 rpm at 20
o
C.
Step4. Filter through 0.2 µm filter before analysis.
2.
Ready to Feed Formula
Step1: Transfer 12 mL of RTF to a 50 mL Amicon Ultra-15 Centrifugal filter device and
cap. Centrifuge for 60 min at 5000 rpm at 20
o
C.
Step2: Filter through 0.2µm filter before analysis.
3.
Adult Nutritional High fat and High Protein formula*
Step1: Place a 20 mL polypropylene bottle on the balance and tare it. Add 5 g of liquid
and record the weight.
Step2: Make up the volume with DI water up to 20 mL Add g of DI water and record the
total weight. Cap the bottle and shake until well dissolved. Shake for 2-3 min.
Step3: Transfer the 12 mL of it to a 50 mL Amicon Ultra-15 Centrifugal filter device and
cap. Centrifuge for 60 min at 5000rpm at 20
o
C.
Step4: Filter through 0.2µm filter before analysis.
* Due to the high viscosity of AN high fat and AN high protein formula, these samples (both
placebos and fortified) were diluted 4 times before centrifugation.
Validation protocol
SLV guidelines.—SPIFAN SLV recommended guidelines were followed.
System suitability
Verify check standards daily at the lowest point and midpoint of the analytical
range throughout the batch run. Recalibrate the system when the percent error of the check
standards is >5%.
Linearity/Calibration Fit
: Perform three separate experiments using independently prepared
standards at seven concentration levels that span the desired working range. In this study, the
relative error of back-calculated concentrations within the desired working range was <5%.
Precision studies
- Analyze samples selected for precision studies on each of six days using
multiple instruments. Prepare fresh reagents each day.
Fluor-02 SLV
FOR ERP USE ONLY
DO NOT DISTRIBUTE