LaMotte MANGANESE KIT User Manual

TO TAL, CAL CIUM AND

MAG NE SIUM HARD NESS TEST KIT

AUTOMA TIC BURET METHOD

MODEL AB-HCM • CODE 7173-01

QUANTITY CONTENTS CODE

100 Hardness Reagent #6 Tablets 4484-J
100 mL *Sodium Hydroxide Reagent

w/Metal Inhibitors
100 Calcium Hardness Indicator Tablets T-5250-J
2 x 250 mL Hardness Titration Reagent 4257-K
30 mL *Hardness Reagent #5 *4483-G
1 Erlenmeyer Flask, 125 mL, glass 0431
1 Graduated Cylinder, 25 mL, glass 0417
1 Pipet, 1.0 mL, plastic 0354
1 Automatic Buret 0427

*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 of test kit components, use the specified code
number.

Read the Automatic Buret Instruction Manual before proceeding.

PRO CE DURE

TOTAL HARDNESS

1. Fill graduated cylinder (0417) to the 25 mL line with sample water.

Transfer to the clean 125 mL Erlenmeyer flask (0431).

2. Add 10 drops of *Hardness Reagent #5 (4483). Mix.

3. Add one Hardness Reagent #6 Tablet (4484). Mix until tablet

disintegrates. Sample should turn red.

*4259-J

4. Fill the Automatic Buret (0427) with the Hardness Titration Reagent

(4257). While gently swirling the flask, add Hardness Titration
Reagent until red color changes to blue. Record the buret reading to
the nearest 0.05 mL.

5. Multiply buret reading by 10. Record as ppm Total Hardness as

CaCO3.

Total Hardness (ppm CaCO3) = 10 x Buret Reading

CALCIUM HARDNESS

1. Fill graduated cylinder (0417) to the 25 mL line with sample water.

Transfer to the clean 125 mL Erlenmeyer flask (0431).

2. Use the 1.0 mL pipet (0354) to add 2.0 mL (two measures) of

*Sodium Hydroxide Reagent w/Metal Inhibitors (4259). Mix.

3. Add one Calcium Hardness Indicator Tablet (T-5250). Mix until

tablet disintegrates.

4. Fill the Automatic Buret with the Hardness Titration Reagent

(4257). While gently swirling flask, add Hardness Titration Reagent
until red color changes to blue. Record the buret reading to the
nearest 0.05 mL.

5. Multiply buret reading by 10. Record as ppm Calcium Hardness as

CaCO3.

Calcium Hardness (ppm CaCO3) = 10 x Buret Reading

To convert to calcium, multiply result by 0.4. Record as ppm
Calcium.

Calcium (ppm Ca) = 0.4 x Calcium Hardness

MAGNESIUM HARDNESS

1. Subtract Calcium Hardness from Total Hardness. Record as ppm

Magnesium Hardness as CaCO3.

Magnesium Hardness (ppm CaCO3) =

Total Hardness - Calcium Hardness

2. To convert to Magnesium, multiply result by 0.24. Record as ppm

Magnesium.

Magnesium (ppm Mg) = 0.24 x Magnesium Hardness

LaMOTTE COM PANY

Helping Peo ple Solve An a lyt i cal Challenges

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

®

04.05