Chlorine Test Paper 1 PK (Chemicals for Laboratory / Test Kits/Strips) -- Gallade Chemical Shopping Cart -- PK 1 Paper Test Chlorine

<h1>Chlorine Test Paper 1 PK -- Gallade Chemical Shopping Cart</h1> <a href="http://galladechem.com/freeship.htm" target="_blank"><img src="https://www.nexternal.com/gallade/images/freeship_truck.gif" width="160" height="12" border="0"></a> <img src="https://store.nexternal.com/gallade/images/emdchem125x125.jpg" align="right" alt="Chlorine Test Paper 1 PK" name="Chlorine Test Paper 1 PK" border="0" hspace="10" /> <a href="http://www.emdchemicals.com/analytics/doc/msds/MSDSU_17923.htm" target="_blank">MSDS (Material Safety Data Sheet)</a> <TITLE>EM Quant Chlorine Test Paper, Cat No 17923</TITLE> <link rel=stylesheet type='text/css' href='/analytics/lit.css'> </HEAD> <BODY BGCOLOR="#FFFFFF" topmargin=0 leftmargin=0> <TABLE BORDER=0 CELLPADDING=10 CELLSPACING=0 width=750> <TR> <TD> <H2>EM Quant® Chlorine Test Paper, Catalog No. 17923/1</h2> <h4>1. Method</h4> Chlorine oxidizes an organic compound to form a violet dye. The chlorine concentration is measured semiquantitatively by visual comparison of the test paper with the fields of a color scale. <h4>2. Measuring Range</h4> <TABLE WIDTH=350 align=center cellpadding=5 BORDER="1"> <TR> <TD ALIGN="CENTER">Measuring Range/Color Scale Graduation</td> </TR> <TR> <TD ALIGN="CENTER">25-50-100-200-500mg/l Cl2</td> </TR> </TABLE> <h4>3. Applications</h4> Sample Material: Bleaching solutions Disinfectant solutions Rinsing solutions <h4>4. Influence of Foreign Substances</h4> The concentrations of foreign substances given in the table lie below the limit at which the color comparison is made more difficult: <TABLE WIDTH=300 BORDER="1" cellpadding=5 align=center> <tr> <td align=center colspan=3>Concentrations of Foreign Substances in mg/l or %</td> </tr> <TR> <TD valign=top width="25%"> <table width="100%" cellpadding=2> <tr> <td>Al3+</td> <td align=right>1000</td> </tr> <tr> <td>CA2+</td> <td align=right>1000</td> </tr> <tr> <td>CN-</td> <td align=right>5</td> </tr> <tr> <td>Cr3+</td> <td align=right>1000</td> </tr> <tr> <td>Cr2O72-</td> <td align=right>1</td> </tr> <tr> <td>Cu2+</td> <td align=right>250</td> </tr> <tr> <td>Fe3+</td> <td align=right>250</td> </tr> <tr> <td>NO2-</td> <td align=right>5</td> </tr> <tr> <td>S2-</td> <td align=right>5</td> </tr> </table> </td> <TD valign=top width="25%"> <table width="100%" cellpadding=2> <tr> <td>Br2</td> <td align=right>10</td> </tr> <tr> <td>I2</td> <td align=right>5</td> </tr> <tr> <td>H2O2</td> <td align=right>10</td> </tr> <tr> <td>NaCl</td> <td align=right>10%</td> </tr> <tr> <td>NaNO3</td> <td align=right>10%</td> </tr> <tr> <td>Na2SO4</td> <td align=right>5%</td> </tr> </table> </td> </TR> </TABLE> <h4>5. Reagents and Auxiliaries</h4> <table width=410 cellpadding=8 border=1 align=center> <tr> <td>Please note the warnings on the packaging materials! The analytical test strips are stable at least up to the date stated on the pack when stored at +2 to +8°C and protected from moisture.</td> </tr></table> Package Contents: One bag containing 3 rolls of test paper (approximately 1200 determinations). Each roll is 4 meters. Other Reagents: Dichloroisocyanuric acid sodium salt dihydrate GR for analysis, Cat. No. 1.10888.0100 (Merck KGaA, Darmstadt, Germany) <h4>6. Preparation</h4> Samples containing more than 500mg/l Cl2 must be diluted with distilled water. <h4>7. Procedure</h4> <UL> <li> Immerse the of the analytical test paper in the measurement solution for approximately 2 seconds.</li> <li> Shake off excess liquid from the test paper.</li> <li> After approximately 10 seconds, determine with which color field on the label the color of the test paper coincides most exactly.</li> <li> Read off the corresponding result in mg/l Cl2. If an exact color match cannot be achieved, estimate an intermediate value.</li> </UL> <h4>Notes on the Measurement:</h4> <UL> <li> The color of the test paper may continue to change after the specified reaction time has elapsed. This must not be considered in the measurement.</li> <li> If the color of the test paper is equal to or more intense than the darkest color on the scale, repeat the measurement using fresh, diluted samples until a value of less than 500mg/l Cl2 is obtained.</li> <li> This must then be multiplied by the corresponding dilution factor.</li> </UL> <h4>8. Method Control</h4> To check analytical test papers and procedure: Dissolve 1.85g of dichloroisocyanuric acid sodium salt dihydrate in distilled water, make up to 1000ml with distilled water, and mix. Content: approximately 1000mg/l free chlorine. (The exact chlorine content can be determined titrimetrically according to EN ISO 7393-3.) Dilute this standard solution to 200mg/l Cl2 and analyze as described in section 7. <h4>9. 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