Hach AutoCAT 9000 - Page 58

PAO/5.64 mN
© Hach Company, 2002–2003, 2007. All rights reserved. Printed in the U.S.A. 3/07 3ed
Page 56 50081_PAONaThioCalibration.fm
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Required Reagents
Description Qty. required per test Unit Cat. No.
Acetate Buffer Solution, pH 4, w/dropper...................................................1 mL................. 100 mL ...............14909-32
Iodine Standard Solution, 0.0282 N ............................................................ varies................ 1000 mL .............23333-53
Phenylarsine Oxide (PAO) Titrant, 0.00564 N
*
..........................................varies................ 1000 mL ...............1999-53
Potassium Iodide, SwifTest refill ................................................................ 0.10 g ............... 50 g.......................1077-60
Sodium Thiosulfate Standard Solution, stabilized, 0.00564 N
*
..................varies................ 1 L ......................24088-53
Required Apparatus
Beaker, Glass, 250-mL ................................................................................1 ....................... each......................500-46H
Cylinder, Graduated, 250 mL ......................................................................1 ....................... each.........................508-46
Magnetic Stir Bar, Teflon
®†
coated.............................................................1 ....................... each.....................50085-00
Pipet, Volumetric, Class A, 0.50 mL........................................................... 1 ....................... each.....................14515-34
SwifTest dispenser....................................................................................... 1 ....................... each.....................28341-00
Optional Reagents
Dilution water, organic-free ........................................................................ varies................ 500 mL ...............26415-49
Potassium Iodide, Powder Pillows ..............................................................1 ....................... 100/pkg.................1077-99
Optional Apparatus
Mini-printer, thermal, w/cable............................................................................................... each.....................A70P021
*Either titrant may be calibrated with this procedure.
†Teflon is a Registered Trademark of EI DuPont Company.