Lovibond MD 100 User manual

Lovibond®Water Testing
Tintometer®Group
Manual of Methods
MD 100 • MD 110 • MD 200
Alkalinity-m | Bromine | Chlorine | Cyanuric Acid | Hardness | pH
EN
Manual of Methods
Page 4
DE
Methodenhandbuch
Seite 48
ES
Manual de Metodos
Página 94
FR
Methodes Manuel
Page 140
IT
Manuale dei Metodi
Pagina 186
PT
Metodos Manual
Página 232
NL
Handboek Methoden
Zijde 278
ZH
方法手册
Page 322

NL Handboek van Methoden 01/20EN Handbook of Methods 01/20
KS4.3 T
0.1 - 4 mmol/l KS4.3
Acid / Indicator
20
S:4.3
Instrument specific information
The test can be performed on the following devices. In addition, the required cuvette
and the absorption range of the photometer are indicated.
Instrument Type Cuvette λMeasuring Range
MD 200, MD 600, MD 610,
MD 640, MultiDirect, PM 620,
PM 630
ø 24 mm 610 nm 0.1 - 4 mmol/l KS4.3
SpectroDirect, XD 7000,
XD 7500
ø 24 mm 615 nm 0.1 - 4 mmol/l KS4.3
Material
Required material (partly optional):
Reagents Packaging Unit Part Number
Alka-M-Photometer Tablet / 100 513210BT
Alka-M-Photometer Tablet / 250 513211BT
Application List
• Waste Water Treatment
• Drinking Water Treatment
• Raw Water Treatment
Notes
1. The terms Alkalinity-m, m-Value, total alkalinity and Acid demand to KS4.3 are iden-
tical.
2. For accurate results, exactly 10 ml of water sample must be used for the test.
Display in the MD
100 / MD 110 /
MD 200
Bar code for the
detection of the
methods
Method name
Measuring range
Chemical Method
Method number
Language codes
ISO 639-1 Revision status
KS4.3 T / 20
How to use
ENHandbook of Methods4
EN

Implementation of the provision Acid capacity KS4.3 with Tablet
Select the method on the device
For this method, no ZERO measurements are to be carried out with the following de-
vices: XD 7000, XD 7500
10 ml
Fill 24 mm vial with 10 ml
sample.
Close vial(s).
Sample
Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Dissolve tablet(s) by inver-
ting.
Sample
Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Test
Press the TEST (XD:
START)button.
The result in Acid Capacity KS4.3 appears on the display.
Performing test
procedure
KS4.3 T / 20
NL Handboek van Methoden 01/20EN Handbook of Methods 01/20
How to use
ENHandbook of Methods 5
EN

Alkalinity-m T / M30
ENMethod Reference Book1.06
EN
Alkalinity-m T M30
5 - 200 mg/l CaCO3tA
Acid / Indicator
Notes
1. The terms Alkalinity-m, m-Value, total alkalinity and Acid demand to KS4.3 are identical.
2. For accurate results, exactly 10 ml of water sample must be used for the test.

Alkalinity-m T / M30
ENMethod Reference Book1.0 7
EN
Implementation of the provision Alkalinity, total = Alkalinity-m =
m-Value with Tablet
Select the method on the device
10 ml
Sample
Fill 24 mm vial with 10 ml
sample.
Close vial(s). Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Zero
Press the ZERO button. Remove the vial from the
sample chamber.
24 mm
Add ALKA-M-
PHOTOMETER tablet.
Crush tablet(s) by rotating
slightly.
Close vial(s).

Alkalinity-m T / M30
ENMethod Reference Book1.08
EN
Sample
Test
Dissolve tablet(s) by
inverting.
Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Press the TEST (XD:
START)button.
The result in Alkalinity-m appears on the display.

Alkalinity-m T / M30
ENMethod Reference Book1.0 9
EN
Analyses
The following table identifies the output values can be converted into other citation
forms.
Unit Cite form Scale Factor
mg/l CaCO31
°dH 0.056
°eH 0.07
°fH 0.1
°aH 0.058
KS4.3
Chemical Method
Acid / Indicator
Appendix
Derived from
EN ISO 9963-1

Bromine T / M80
ENMethod Reference Book1.010
EN
Bromine T M80
0.05 - 13 mg/l Br2Br
DPD
Preperation
1. Cleaning of vials:
As many household cleaners (e.g. dishwasher detergent) contain reducing
substances, the subsequent determination of oxidising agents (e.g. ozone and
chlorine) may show lower results. To avoid measurement errors, the glassware
used should be free of chlorine consumption. To achieve this, all glassware should
be placed in a sodium hypochlorite solution (0.1 g/l) for one hour and then rinsed
thoroughly with deionised water.
2. When preparing the sample, Bromine outgassing, e.g. through the pipette or shaking,
must be avoided. The analysis must take place immediately after taking the sample.
3. Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7
before the analysis (use 0.5 mol/l Sulphuric acid or 1 mol/l Sodium hydroxide).

Bromine T / M80
ENMethod Reference Book1.0 11
EN
Implementation of the provision Bromine with Tablet
Select the method on the device
10 ml
Sample
Fill 24 mm vial with 10 ml
sample.
Close vial(s). Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Zero
Press the ZERO button. Remove the vial from the
sample chamber.
Empty vial except for a few
drops.
24 mm
Add DPD No. 1 tablet . Crush tablet(s) by rotating
slightly.
Fill up vial with sample to
the 10 ml mark.

Bromine T / M80
ENMethod Reference Book1.012
EN
Sample
Close vial(s). Dissolve tablet(s) by
inverting.
Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Test
Press the TEST (XD:
START)button.
The result in mg/l Bromine appears on the display.

Bromine T / M80
ENMethod Reference Book1.0 13
EN
Chemical Method
DPD
Appendix
Interferences
Persistant Interferences
1. All oxidising agents in the samples react like bromine, which leads to higher results.
2. Concentrations above 22 mg/l Bromine can lead to results within the measuring
range of up to 0 mg/l. In this case, the water sample must be diluted. 10 ml of the
diluted sample should be mixed with the reagent and the measurement taken again
(plausibility test).
Derived from
US EPA 330.5 (1983)
APHA Method 4500 Cl-G

Chlorine T / M100
ENMethod Reference Book1.014
EN
Chlorine T M100
0.01 - 6.0 mg/l Cl2 a) CL6
DPD
Sampling
1. When preparing the sample, Chlorine outgassing, e.g. through the pipette or shaking,
must be avoided.
2. The analysis must take place immediately after taking the sample.
Preperation
1. Cleaning of vials:
As many household cleaners (e.g. dishwasher detergent) contain reducing
substances, this can lead to lower results with the determination of Chlorine. To avoid
measurement errors, the glassware used should be free of chlorine consumption. To
achieve this, all glassware should be placed in a sodium hypochlorite solution (0.1 g/l)
for one hour and then rinsed thoroughly with deionised water.
2. For individual testing of free and total Chlorine, the use of different sets of glassware
is recommended (EN ISO 7393-2, 5.3)
3. The DPD colour development is carried out at a pH value of 6.2 to 6.5. The reagents
therefore contain a buffer for the pH adjustment. Strong alkaline or acidic water
samples must therefore be adjusted between pH 6 and pH 7 before the analysis (use
0.5 mol/l Sulphuric acid or 1 mol/l Sodium hydroxide).

Chlorine T / M100
ENMethod Reference Book1.0 15
EN
Implementation of the provision free chlorine with tablet
Select the method on the device
In addition, choose the test: free
10 ml
Sample
Fill 24 mm vial with 10 ml
sample.
Close vial(s). Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Zero
Press the ZERO button. Remove the vial from the
sample chamber.
Empty vial except for a few
drops.
24 mm
Add DPD No. 1 tablet . Crush tablet(s) by rotating
slightly.
Fill up vial with sample to
the 10 ml mark.

Chlorine T / M100
ENMethod Reference Book1.016
EN
Sample
Close vial(s). Dissolve tablet(s) by
inverting.
Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Test
Press the TEST (XD:
START)button.
The result in mg/l free chlorine appears on the display.
Implementation of the provision total Chlorine with tablet
Select the method on the device
In addition, choose the test: total
10 ml
Sample
Fill 24 mm vial with 10 ml
sample.
Close vial(s). Place sample vial in the
sample chamber. • Pay
attention to the positioning.

Chlorine T / M100
ENMethod Reference Book1.0 17
EN
Zero
Press the ZERO button. Remove the vial from the
sample chamber.
Empty vial except for a few
drops.
24 mm
Add DPD No. 1 tablet . Add DPD No. 3 tablet . Crush tablet(s) by rotating
slightly.
Fill up vial with sample to
the 10 ml mark.
Close vial(s). Dissolve tablet(s) by
inverting.

Chlorine T / M100
ENMethod Reference Book1.018
EN
Sample
Test
9
4
5
6
7
8
10
11 12
1
2
3
2 min
Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Press the TEST (XD:
START)button.
Wait for 2 minute(s)
reaction time.
Once the reaction period is finished, the measurement takes place automatically.
The result in mg/l total Chlorine appears on the display.

Chlorine T / M100
ENMethod Reference Book1.0 19
EN
Chemical Method
DPD
Appendix
Interferences
Persistant Interferences
• All oxidising agents in the samples react like chlorine, which leads to higher results.
Removeable Interferences
• Interference from Copper and Iron (III) are eliminated by the addition of EDTA.
• The use of reagent tablets in samples with high Calcium content* and/or
high conductivity* can lead to turbidity of the sample and therefore incorrect
measurements. In this case, the alternative reagent tablet DPD No. 1 High Calcium
and reagent tablet DPD No. 3 High Calcium should be used.
*it is not possible to give exact values, because the development of turbidity depends
on the composition and nature of the sample.
• Concentrations above 10 mg/l Chlorine, in the event of using fluid reagents, can
lead to results within the measuring range of up to 0 mg/l. In the event of a high
concentration of Chlorine, the sample must be diluted with chlorine-free water. 10 ml
of the diluted sample should be mixed with the reagent and the measurement taken
again (plausibility test).
Interference from / [mg/l]
CrO4 2- 0.01
MnO20.01
Method Validation
Limit of Detection 0.02 mg/l
Limit of Quantification 0.06 mg/l
End of Measuring Range 6 mg/l
Sensitivity 2.05 mg/l / Abs
Confidence Intervall 0.04 mg/l
Standard Deviation 0.019 mg/l
Variation Coefficient 0.87 %
Conformity
EN ISO 7393-2
a) determination of free, combined and total

Chlorine L / M101
ENMethod Reference Book1.020
EN
Chlorine L M101
0.02 - 4.0 mg/l Cl2 a) CL6
DPD
Sampling
1. When preparing the sample, Chlorine outgassing, e.g. through the pipette or shaking,
must be avoided.
2. The analysis must take place immediately after taking the sample.
Preperation
1. Cleaning of vials:
As many household cleaners (e.g. dishwasher detergent) contain reducing
substances, this can lead to lower results with the determination of Chlorine. To avoid
measurement errors, the glassware used should be free of chlorine consumption. To
achieve this, all glassware should be placed in a sodium hypochlorite solution (0.1 g/l)
for one hour and then rinsed thoroughly with deionised water.
2. For individual testing of free and total Chlorine, the use of different sets of glassware
is recommended (EN ISO 7393-2, 5.3)
3. The DPD colour development is carried out at a pH value of 6.2 to 6.5. The reagents
therefore contain a buffer for the pH adjustment. Strong alkaline or acidic water
samples must therefore be adjusted between pH 6 and pH 7 before the analysis (use
0.5 mol/l Sulphuric acid or 1 mol/l Sodium hydroxide).
Notes
1. After use, ensure the cuvettes are once again closed with the respective same-
coloured screw caps.
2. Reagent sets are to be stored in the cool at +6 °C to +10 °C.

Chlorine L / M101
ENMethod Reference Book1.0 21
EN
Implementation of the provision free chlorine with liquid reagent
Select the method on the device
In addition, choose the test: free
10 ml
Sample
Fill 24 mm vial with 10 ml
sample.
Close vial(s). Place sample vial in the
sample chamber. • Pay
attention to the positioning.
Zero
Press the ZERO button. Remove the vial from the
sample chamber.
Empty vial.
6 2
Hold cuvettes vertically
and add equal drops by
pressing slowly.
Add 6 drops DPD
1 Buffer Solution.
Add 2 drops DPD
1 Reagent Solution.