TOTAL HARDNESS KIT

Code 4482-DR-LI-01 | Direct Reading Titrator, 0-200 ppm

QUANTITY CONTENTS CODE

15 mL *Hardness Reagent #5 *4483-E

*Reagent is a potential health

hazard. READ SDS: lamotte.com

Emergency information:

Chem-Tel USA 1-800-255-3924

Int’l, call collect, 813-248-0585

15 mL *Hardness Reagent #6 Solution *4485-E

60mL Hardness Reagent #7 4487DR-H

1 Test Tube, 5-10-12.9-15-20-25 mL,

glass, w/cap

0608

1 Direct Reading Titrator, 0-200 Range 0382

1 Pipet, 0.5 mL, plastic 0353

To order individual reagents or test kit components, use the

speciﬁed code number.

NOTE: Read the Direct Reading Titrator Instruction Manual before proceeding. The Titrator

is calibrated in terms of total hardness expressed as parts per million (ppm) calcium

carbonate (CaCO

). Each minor division on the Titrator scale equals 4 ppm CaCO

PROCEDURE

1. Fill the test tube (0608) to 12.9 mL line with sample water.

2. Add ﬁve drops of *Hardness Reagent #5 (4483). Swirl to mix.

3. Add ﬁve of Hardness Reagent #6 Solution (4485) and swirl to mix. Solution will turn red

if hardness is present. If solution is blue, there is no measurable amount of hardness.

4. Fill the Direct Reading Titrator (0382) with Hardness Reagent #7 (4487DR). Insert

Titrator in the center hole of the test tube cap.

5. While gently swirling the titration tube, slowly press the plunger to titrate the sample

until the red color changes to blue. Read the test result directly from the scale where

the large ring on the Titrator meets the Titrator barrel. The result is expressed as Total

Hardness in ppm CaCO

EXAMPLE: Plunger tip is 3 minor divisions below line 80. Test result is 80 plus

(3 divisions x 4) equals 92 ppm.6.

6. If the plunger tip reaches the bottom line on the Titrator scale (200 ppm) before the

color change occurs, reﬁll the Titrator and continue the titration. When recording the

test result, be sure to include the value of the original amount of reagent dispensed (200

ppm).

7. To convert ppm Hardness to grains per gallon (gpg), multiply by 0.058. Record as gpg

Hardness as CaCO

gpg CaC0

= ppm CaC0

x 0.058

LAMOTTE COMPANY | 802 Washington Avenue | Chestertown, Maryland | 21620 USA

800.344.3100 | +1 410.778.3100 (Outside USA) | Fax 410.778.6394 | lamotte.com

ANALYSIS OF HARNESS IN SALT WATER

When sea and estuarine waters containing very high levels of mineral salts are tested,

the sample must be diluted before titration. This test kit contains a calibrated pipet for

performing the dilution described below.

1. Use the 0.5 mL pipet (0353) to transfer 0.5 mL of the salt water sample to the test tube

(0608).

2. Dilute to the 12.9 mL line with distilled water (a 1 to 25.8 dilution).

3. Follow Steps 2 through 6 above. Multiply the Titrator reading by 25.8. Record as ppm

Total Hardness as CaCO