Methods; Hardness, Total 2 - 50 Mg/L With Tablet - Tintometer Lovibond MD100 Mode D'emploi

Methods

GB
tH 1
0.0.0
Zero
!
Test
tH 1
RESULT
Notes:
1. Strong alkaline or acidic water samples must be adjusted between pH 4 and pH 10
before the tablet is added (use 1 mol/l Hydrochloric acid resp. 1mol/l Sodium hydroxide).
2. Conversion table:
1 mg/l CaCO
3
1 °dH
1 °fH
1 °eH
22
Hardness, total with Tablet
2 – 50 mg/l
Fill a clean vial (24 mm Ø) with 10 ml of the water sample and
perform zero calibration (see "Operation").
Add one HARDCHECK P tablet straight from the foil to the water
sample and crush the tablet using a clean stirring rod.
Close the vial tightly with the cap and swirl gently several times until
the tablet is dissolved.
Place the vial in the sample chamber making sure that the
are aligned.
Wait for a reaction period of 5 minutes.
(Countdown can be activated, see page 21)
The method symbol flashes for approx. 3 seconds.
The result is shown in the display as CaCO
Tolerances: ± 5 mg/l
mg/l CaCO
3
----
17.8
10.0
14.3
.
3
°dH °fH
0.056 0.10
---- 1.78
0.56 ----
0.80 1.43
marks
°eH
0.07
1.25
0.70
----
MD100_1c 03/2013