Lamotte Total Hardness Test Kit User Manual
TOTAL, CALCIUM & MAGNESIUM
HARDNESS KIT
DIRECT READING TITRATOR, FRESH & SALT WATER
CODE 4824-DR-LT-01
QUANTITY CONTENTS CODE
15 mL *Sodium Hydroxide Reagent with Metal Inhibitors *4259-E
50 Calcium Hardness Indicator Tablets 5250A-H
15 mL *Hardness Reagent #5 *4483-E
50 Hardness Reagent #6 Tablets 4484A-H
60 mL 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
*WARNING: Reagents marked with an * are considered to be potential health hazards.
To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the contents
list or in the test procedures. Omit any letter that follows or precedes the four digit
code number. For example, if the code is 4450WT-H, search 4450. To obtain a printed
copy, contact LaMotte by e-mail, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel:
(US, 1-800-255-3924) (International, call collect, 813-248-0585)
To order individual reagents or test kit components, use the specifi ed code number.
NOTE: Read Direct Reading Titrator Manual before proceeding. The Titrator is
calibrated in terms of hardness expressed as parts per million (ppm) Calcium Carbonate
as CaCO3. Each minor division on the Titrator scale equals 4 ppm CaCO3.
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.
TOTAL HARDNESS TEST PROCEDURE
1
Fill a test
tube (0608)
to the 12.9
mL line with
the sample
water.
4
Fill Direct
Reading
Titrator (0382)
with Hardness
Reagent #7
(4487DR).
7
Read the test
result directly
from the scale
where the large
ring on the
Titrator meets the
Titrator barrel.
Record as ppm
Total Hardness as
(CaCO3).
Add one Hardness
2
Add 5 drops
of *Hardness
Reagent #5
(4483). Swirl
to mix.
3
Reagent #6 Tablet
(4484A). Cap and swirl until
tablet disintegrates. Solution
will turn red if hardness
is present. If solution
is blue, there is no
measurable amount
of hardness.
56
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Result:
88 ppm
Insert the
Titrator into
the center
hole of the
test tube cap.
80
100
120
While gently
swirling the tube,
0
0.1
0.2
slowly press the
0.3
0.4
0.5
0.6
plunger to titrate
0.7
0.8
0.9
1.0
until the red color
changes to clear
blue.
EXAMPLE:
Plunger tip is 2 minor
divisions below line 80.
Test result is:
80 + (2 divisions x 4) = 88 ppm.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
:
NOTE:
Parts per million CaCO3 may be converted to grains per gallon (gpg) CaCO3:
gpg CaCO3 = ppm CaCO3 x 0.058
If the plunger reaches the bottom line on the scale (200 ppm)
before the endpoint color change occurs, refi ll 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).
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