TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
HYDROGEN PEROXIDE–LOW RANGE<br />
DPD METHOD CODE 3662-SC<br />
QUANTITY CONTENTS CODE<br />
30 mL *Hydrogen Peroxide Reagent #1 *6452-G<br />
100 *Hydrogen Peroxide LR Tablets *6454-J<br />
1 Tablet Crusher 0175<br />
*WARNING: Reagents marked with an * are considered hazardous substances. To<br />
view or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD<br />
or our web site. To obtain a printed copy, contact us by e-mail, phone or fax.<br />
Hydrogen peroxide, H2O2, is a colorless compound that is widely used as a<br />
bleaching or decolorizing agent in the manufacture of many commercial<br />
products. As an oxidizing compound it is also used in the treatment of sewage<br />
to reduce odors and corrosion due to hydrogen sulfide. It may also be used as a<br />
sanitizing agent for water treatment. Hydrogen peroxide is relatively unstable,<br />
and for this reason it dissipates quickly and leaves no residuals.<br />
APPLICATION: Drinking and surface waters; domestic and industrial waste<br />
water.<br />
RANGE: 0.00–1.50 ppm Hydrogen Peroxide<br />
METHOD: Hydrogen peroxide reacts with an excess of potassium iodide<br />
through the action of a catalyst and buffer to release an<br />
equivalent amount of iodine. The iodine in turn reacts with<br />
diethyl-p-phenylenediamine (DPD) to produce a pink-red<br />
SAMPLE<br />
HANDLING &<br />
PRESERVATION:<br />
color in proportion to the iodine released.<br />
Hydrogen peroxide is not stable in aqueous solutions.<br />
Exposure to sunlight and agitation will accelerate the<br />
reduction of hydrogen peroxide in dilute solutions. For best<br />
results start analysis immediately after sampling.<br />
INTERFERENCES: The likelihood of other oxidizing compounds interfering<br />
with this method is eliminated by the presence of hydrogen<br />
peroxide. Manganese may interfere and should be removed<br />
before analysis<br />
Smart2 <strong>TEST</strong> PROCEDURES 2.04 Hydrogen Peroxide–LR 1/2