LaMotte ZINC TEST KIT ZN User Manual

ZINC TEST KIT

L

Mott

WARNING! This set contains chemicals

that may be harmful if misused. Read

cautions on individual containers

carefully. Not to be used by children

except under adult supervision

L

Mott

MODEL ZN • CODE 7391-01

QUANTITY CONTENTS CODE

30g *Zinc Reagent Powder *7393-G

15 mL *Zinc Conditioning Reagent *7361-E

1 Demineralizer Bottle, 60 mL 1151

1 Spoon, 0.5g, plastic 0698

1 Pipet, 1.0 mL, plastic 0354

2 Test Tubes, 5 mL, glass, w/caps 0230

1 Zinc Comparator, 0-10 ppm 7392

*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these
reagents go to www.lamotte.com. To obtain a printed copy, contact LaMotte by
e-mail, phone or fax.To order individual reagents or test kit components, use the
specified code number.
Read the Demineralizer Bot tle In struc tions be fore pro ceed ing.

USE OF THE OC TET COM PARA TOR

The Octet Comparator contains eight permanent
color standards. A test sample is inserted into the
openings in the top of the comparator. The sample
can then be compared to four color standards at once,
and the value read off the comparator. For optimum
color comparison, the comparator should be
positioned between the operator and a light source,
so that the light enters through the special
light-diffusing screen in the back of the

direct sunlight or an irregularly lighted background.

comparator.Avoid viewing the comparator against

PRO CE DURE

1. Use the 1.0 mL pipet (0354) to add 2 mL of sample water to a 5 mL test tube
(0230).

2. Use water from the Demineralizer Bottle (1151) to fill test tube to the 5 mL
line. Cap and mix.

3. Add 5 drops of *Zinc Conditioning Reagent (7361). Cap and mix. Wait one
minute. This reagent will eliminate copper interference and adjust the pH of
the sample water to pH 9. In water samples where the pH is very low, adjust
the pH of the sample to approximately 9 before adding the *Zinc
Conditioning Reagent (7361).

4. Use the 0.5g spoon (0698) to add one level scoop of *Zinc Reagent Powder
(7393). Cap and shake for 15 seconds. Do not shake for longer than 15
seconds, even if some powder remains undissolved. Wait one minute.

5. Insert test tube into Zinc Comparator (7392). Match sample color with a
color standard. Record as ppm Zinc. If reading is darker than 10 ppm standard
see procedure for High Range Readings.

NOTE: Slight variations in the amount of *Zinc Reagent Powder (7393)
added in Step 4 may cause the intensity, but not the shade, of the color
reaction to vary. Since each color standard exhibits a distinct shade of color,
this should not hinder the ability to get an accurate reading.

HIGHER RANGE READ INGS (0-20.0 ppm)

If reading is darker than the 10 ppm color standard repeat test on a diluted sample.

1. Use the 1.0 mL pipet (0354) to add 1 mL of sample water to a 5 mL test tube
(0230).

2. Follow Steps 2 through 5 above. Multiply reading by 2. Record as ppm Zinc.

LOWER RANGE READ INGS (0-4.0 ppm)

For more precise measurements between 0 and 4 ppm.

1. Fill test tube (0230) to 5 mL line with sample water.

2. Fol low Steps 3 through 5 above. Mul ti ply read ing by 0.4. Re cord re sults as

ppm Zinc.

LaMOTTE COM PANY

Helping Peo ple Solve An a lyt i cal Chal lenges

PO Box 329 • Chestertown • Mary land • 21620 • USA

800-344-3100 • 410-778-3100 (Out side U.S.A.) • Fax: [phone]

Visit us on the web at www.lamotte.com

®

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