Hach DR/850, Procedures Manual, Page: 206 / 460

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agent. The indicator reacts with the ferrous iron in the sample,
buffered between pH 3-4, resulting in a deep blue-purple color.
REQUIRED REAGENTS
Cat. No.
FerroMo Reagent Set (100 tests) .................................................................................. 25448-00
Includes: (4) 25437-68, (2) 25438-66
Quantity Required
Description Per Test Unit Cat. No
FerroMo Iron Reagent 1 Powder Pillows ................1 pillow ................. 25/pkg.......... 25437-68
FerroMo Iron Reagent 2 Powder Pillows ................1 pillow ................. 50/pkg.......... 25438-66
REQUIRED APPARATUS
Clippers, for opening powder pillows........................... 1........................... each.............. 968-00
Cylinder, graduated, mixing, 50 mL ............................. 1........................... each............ 1896-41
Sample Cell, 10-20-25 mL, w/cap ................................ 2......................... 6/pkg.......... 24019-06
OPTIONAL REAGENTS
Hydrochloric Acid Solution, 6.0 N (1:1) ...............................................500 mL.............. 884-49
Hydrochloric Acid, ACS........................................................................500 mL.............. 134-49
Iron Standard Solution, 100 mg/L Fe ....................................................100 mL.......... 14175-42
Iron Standard Solution, PourRite Ampule,
25 mg/L Fe, 2 mL ................................................................................ 20/pkg.......... 24629-20
Sodium Hydroxide Standard Solution, 1.0 N ..............................100 mL MDB............ 1045-32
Sodium Hydroxide Standard Solution, 5.0 N ..............................100 mL MDB............ 2450-32
Sulfuric Acid Standard Solution, 1.0 N .......................................100 mL MDB............ 1270-32
Water, deionized............................................................................................ 4 L............. 272-56
OPTIONAL APPARATUS
Ampule Breaker Kit.................................................................................... each.......... 24846-00
Flask, volumetric, Class A, 250 mL ........................................................... each.......... 14574-46
pH Indicator Paper, 1 to 11 pH ......................................................... 5 rolls/pkg .............. 391-33
pH Meter,
Sens
ion
™ 1 , portable, with electrode ........................................ each.......... 51700-10
Pipet Filler, safety bulb ............................................................................... each.......... 14651-00
Pipet, TenSette, 0.1 to 1.0 mL..................................................................... each.......... 19700-01
Pipet Tips, for 19700-01 Pipet ................................................................ 50/pkg.......... 21856-96
Pipet Tips, for 19700-01 Pipet ........................................................... 1000/pkg.......... 21856-28
Pipet, volumetric, Class A, 1.00 mL........................................................... each.......... 14515-35
For Technical Assistance, Price and Ordering
In the U.S.A.—Call 800-227-4224
Outside the U.S.A.—Contact the Hach office or distributor serving you.
IRON, TOTAL,
continued