Hach DR/700 Procedures Manual page 489

IRON,
continued
SUMMARY OF METHOD
The FerroZine Iron Reagent forms a purple-colored complex with trace
amounts of iron in samples that are buffered to a pH of 3.5. This method
is applicable for determining trace levels of iron in chemical reagents
and glycols and can be used to analyze samples containing magnetite
(black iron oxide) or ferrites.
REQUIRED REAGENTS AND APPARATUS
Description
FerroZine Iron Reagent
Solution Pillows . . . . . . . . . 1 pillow . . . . 50/pkg . . . . . . . . . 2301-66
Clippers, for opening
powder pillows . . . . . . . . . . 1 . . . . . . . . . each . . . . . . . . . . . 968-00
DR/700 Filter Module
Number 55.01. . . . . . . . . . . 1 . . . . . . . . . each . . . . . . . . . . 46255-00
OPTIONAL REAGENTS
Ammonium Hydroxide, ACS . . . . . . . . . . . . 500 mL . . . . . . . . . 106-49
Hydrochloric Acid Solution, 1:1 (6N). . . . . . 500 mL . . . . . . . . . 884-49
FerroZine Iron Reagent Solution. . . . . . . . . . 1000 mL . . . . . . . 2301-53
Iron Standard Solution, 100 mg/L Fe . . . . . . 105 mL . . . . . . . 14175-42
Iron Standard Solution, Volute ampule,
25 mg/L Fe, 10 mL. . . . . . . . . . . . . . . . . . 16/pkg . . . . . . . . 14253-10
Nitric Acid, ACS . . . . . . . . . . . . . . . . . . . . . . 500 mL . . . . . . . . . 152-49
Nitric Acid Solution, 1:1 . . . . . . . . . . . . . . . . 500 mL . . . . . . . . 2540-49
Water, demineralized . . . . . . . . . . . . . . . . . . . 4 L . . . . . . . . . . . . 272-56
OPTIONAL APPARATUS
Ampule Breaker Kit . . . . . . . . . . . . . . . . . . . each . . . . . . . . . . 21968-00
Cap for 10 and 25-mL sample cells . . . . . . . 12/pkg . . . . . . . . 24018-12
Cylinder, graduated, 25 mL. . . . . . . . . . . . . . each . . . . . . . . . . . . 508-40
Dropper, calibrated,
0.5-mL & 1.0-mL mark . . . . . . . . . . . . . . 6/pkg . . . . . . . . . 23185-06
Flask, erlenmeyer, 125 mL . . . . . . . . . . . . . . each . . . . . . . . . . . . 505-43
Flask, erlenmeyer, 50 mL . . . . . . . . . . . . . . . each . . . . . . . . . . . 505-41
Flask, volumetric, 250 mL, Class B . . . . . . . each . . . . . . . . . . . . 547-46
1
Hot plate, 3 / " diameter, 120 Vac . . . . . . . . each . . . . . . . . . . 12067-01
2
1
Hot plate, 3 / " diameter, 240 Vac . . . . . . . . each . . . . . . . . . . 12067-02
2
pH Indicator Paper, 1 to 11 pH . . . . . . . . . . . 5 rolls/pkg . . . . . . . 391-33
pH Meter, EC 10, portable . . . . . . . . . . . . . . each . . . . . . . . . . 50050-00
Quantity
Per Test Unit
55-41
Cat. No.