Operator's Manual
16. Appendix A – Reagents
Best practices for solution preparation: Vitamin & Cholesterol Analysis
Where high volume usage makes daily solution preparation less practical, the following guidelines can be used.
Solution
Reservoir
Ethanol
1. Green
12.7N KOH
2. Yellow
Water
3. Blue
Hexane
4. Red
Best practices for solution preparation: Fat Analysis
Where high volume usage makes daily solution preparation less practical, the following guidelines can be used.
Solution
Reservoir
Ethanol
1. Green
3N HCl
2. Yellow
Water
3. Blue
Hexane
4. Red
pg. 48
Solution
Make up
Content
2% (w/v)
Weigh 8g ± 0.1g
Pyrogallol
Pyrogallol
(or equivalent)
(or equivalent) into
in Ethanol
500ml volumetric flask.
Make up to mark with
95% Ethanol
12.7N KOH
500g KOH + 500ml water
Water
Deionized water
0.05g/L BHT in
0.05g Butylated
Hexane
hydroxytoluene (BHT) +
1L Hexane
Solution
Make up
Content
2% (w/v)
Weigh 8g ± 0.1g
Pyrogallol
Pyrogallol
(or equivalent)
(or equivalent) into
in Ethanol
500ml volumetric flask.
Make up to mark with
95% Ethanol
3N HCl
Water
Deionized water
0.05g/L BHT in
0.05g Butylated
Hexane
hydroxytoluene (BHT) +
1L Hexane
Storage
Shelf Life
Requirements
Make up fresh
Actinic glass, Vented
daily.
Reservoir, Room
Temperature (15-
o
25
C)
Replenish as
Unvented Reservoir,
needed. Clean
Room Temperature
bottle every two
(15-25
weeks.
Replenish as
Vented Reservoir,
needed. Clean
Room Temperature
bottle every two
(15-25
weeks.
Replenish as
Unvented Reservoir,
needed. Clean
Room Temperature
bottle every two
(15-25
weeks.
Storage
Shelf Life
Requirements
Make up fresh
Actinic glass, Vented
daily.
Reservoir, Room
Temperature (15-
o
25
C)
Unvented Reservoir,
Room Temperature
(15-25
Replenish as
Vented Reservoir,
needed. Clean
Room Temperature
bottle every two
(15-25
weeks.
Replenish as
Unvented Reservoir,
needed. Clean
Room Temperature
bottle every two
(15-25
weeks.
o
C)
o
C)
o
C)
o
C)
o
C)
o
C)
Rev 1/22/2021
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