LaMotte SL-NCR User Manual

NICKEL TEST OUT FIT

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MODEL P-54 • CODE 7802

QUANTITY CONTENTS CODE

60 mL *Hydrochloric Acid, 2.5N *6251PS-H
60 mL *Ammonium Hydroxide, Conc. *6537-H
120 mL Sodium Citrate, 10% 6253-J
60 mL *Dimethylglyoxime, 1% *6254-H
30 g *Ammonium Persulfate Reagent *6566-G
30 mL *Silver Nitrate, 0.0141N *6346-G
120 mL Deionized Water 5115PT-J
1 Test Tube, 5-10-12.9-15-20-25 mL w/cap 0608
1 Graduated Cylinder, 10 mL, glass 0416
2 Test Tubes, 5 mL, glass w/caps 0230
3 Pipets, 1 mL, plastic 0354
1 Pipet, plain, plastic 0352
1 Spoon, 0.1g 0699
1 Nickel Comparator, 0.5 - 10.0 ppm 7803

WARNING: Reagents marked with a * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these
reagents see MSDS CD or www.lamotte.com. To obtain a printed copy, contact
LaMotte by e-mail, phone or fax.

NOTE:This outfit has been designed for determining nickel in effluents where
organic matter is absent and the interfering ions cobalt, iron, copper, manganese
and chromium are each below 15 ppm.

USE OF THE OCTET COM PARA TOR

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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 comparator. Avoid viewing the
comparator against direct sunlight or an
irregularly lighted background.

PRO CE DURE

1. Fill 10 mL graduated cylinder (0416) to 10 mL line with sample
water. Transfer to test tube (0608).

2. Use a 1 mL pipet (0354) to add 1 mL of *Hydrochloric Acid
(6251PS). Cap and mix.

3. Use the 0.1g spoon (0699) to add 2 measures of *Ammonium
Persulfate (6566). Add 2 drops of *Silver Nitrate, 0.0141N (6346).
Cap and mix until all of the Ammonium Persulfate has dissolved.
The solution will be slightly cloudy at this point.

4. Use the graduated cylinder to measure 5 mL of Sodium Citrate, 10%
(6253). Add to solution.

5. Use a second 1 mL pipet to add 1 mL of *Ammonium Hydroxide
(6537). Cap and mix. Dilute to 25 mL with Deionized Water (5115).

6. Use a third 1 mL pipet to add 1 mL of *Dimethylglyoxime (6254).
Cap and mix. Wait 20 minutes.

7. Fill a test tube (0230) to 5 mL line with treated sample. Insert test
tube into Nickel Comparator (7803). Match sample color to a color
standard. Record as ppm nickel.

LaMOTTE COM PANY

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

Helping Peo ple Solve An a lyt i cal Challenges

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

Visit us on the web at www.lamotte.com

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