Hach DR/700 - Page 90

42-6
BENZOTRIAZOLE AND TOLYLTRIAZOLE, continued
SUMMARY OF METHOD
Benzotriazole or tolyltriazole, used in many applications as corrosion
inhibitors for copper and copper alloys, are determined by a proprietary
catalytic ultraviolet (UV) photolysis procedure requiring less than 10
minutes to perform.
REQUIRED REAGENTS
Quantity
Description Per Test Unit Cat. No.
Triazole Reagent
Powder Pillows . . . . . . . . . . . . . . 1 pillow. . . . 50/pkg. . . . . . 21412-66
REQUIRED APPARATUS
Bottles, square, mixing,
25-mL mark. . . . . . . . . . . . . . . . . 1 . . . . . . . . . each. . . . . . . . 17042-00
Clippers, for opening
powder pillows . . . . . . . . . . . . 1 . . . . . . . . . each. . . . . . . . . . 968-00
DR/700 Filter Module
Number 42.01. . . . . . . . . . . . . 1 . . . . . . . . . each. . . . . . . . 46242-00
Stopwatch . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . each. . . . . . . . 14645-00
UV Safety Goggles . . . . . . . . . . . 1 . . . . . . . . . each. . . . . . . . 21134-00
Select one based on available voltage:
Lamp, UV, with power supply,
115 Vac, 60 Hz . . . . . . . . . . . . . . . . . . . . . . . each. . . . . . . . 20828-00
Lamp, UV, with power supply,
230 Vac, 50 Hz . . . . . . . . . . . . . . . . . . . . . . . each. . . . . . . . 20828-02
OPTIONAL REAGENTS
Benzotriazole Standard Solution, 500 mg/L . . . . 100 mL. . . . . . 21413-42
Rochelle Salt Solution. . . . . . . . . . . . . . . . . . . . . . 29 mL* DB . . . 1725-33
Sulfuric Acid Standard Solution, 1.0 N . . . . . . . . .100 mL MDB. . 1270-32
OPTIONAL APPARATUS
Cap for 10- and 25-mL Sample Cells . . . . . . . . 12/pkg. . . . . . 24018-12
Flask, volumetric, 1000 mL . . . . . . . . . . . . . . . each. . . . . . . . 14574-53
Lamp, UV, (lamp only) . . . . . . . . . . . . . . . . . . . each. . . . . . . . 20823-00
pH Indicator Paper, 1 to 11 pH . . . . . . . . . . . . . 5 rolls/pkg. . . . . 391-33
Pipet Filler, safety bulb . . . . . . . . . . . . . . . . . . . each. . . . . . . . 14651-00
*Contact Hach for larger sizes.