Lovibond Handbook of Methods MD100/110/200 Manuale utente

Lovibond® Water Testing

Tintometer® Group

Manual of Methods

MD 100 • MD 110 • MD 200

Chlorine | Chlorine Dioxide

EN

Manual of Methods

Page 4

DE

Methodenhandbuch

Seite 32

ES

Manual de Métodos

Página 60

FR

Méthodes Manuel

Page 88

IT

Manuale dei Metodi

Pagina 116

PT

Métodos Manual

Página 144

NL

Handboek Methoden

Zijde 172

ZH

方法手册

Page 200

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

Chlorine T / M100

ENMethod Reference Book1.06

EN

Chlorine T M100

0.01 - 6.0 mg/L Cl2 a) CL6

DPD

Material

Required material (partly optional):

Reagents Packaging Unit Part Number

DPD No.1 Tablet / 100 511050BT

DPD No. 1 Tablet / 250 511051BT

DPD No. 1 Tablet / 500 511052BT

DPD No. 3 Tablet / 100 511080BT

DPD No. 3 Tablet / 250 511081BT

DPD No. 3 Tablet / 500 511082BT

DPD No. 1 High Calcium e) Tablet / 100 515740BT

DPD No. 1 High Calcium e) Tablet / 250 515741BT

DPD No. 1 High Calcium e) Tablet / 500 515742BT

DPD No. 3 High Calcium e) Tablet / 100 515730BT

DPD No. 3 High Calcium e) Tablet / 250 515731BT

DPD No. 3 High Calcium e) Tablet / 500 515732BT

DPD No. 4 Tablet / 100 511220BT

DPD No. 4 Tablet / 250 511221BT

DPD No. 4 Tablet / 500 511222BT

DPD No. 3 Evo Tablet / 100 511420BT

DPD No. 3 Evo Tablet / 250 511421BT

DPD No. 3 Evo Tablet / 500 511422BT

DPD No. 4 Evo Tablet / 100 511970BT

DPD No. 4 Evo Tablet / 250 511971BT

DPD No. 4 Evo Tablet / 500 511972BT

Available Standards

Title Packaging Unit Part Number

ValidCheck Chlorine 1,5 mg/l 1 pc. 48105510

Chlorine T / M100

ENMethod Reference Book1.0 7

EN

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.

Preparation

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. Evotablets can be used as an alternative to the corresponding standard tablet (e.g.

DPD No.3 Evoinstead of DPD No.3).

Chlorine T / M100

ENMethod Reference Book1.08

EN

Determination of free chlorine 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.

Chlorine T / M100

ENMethod Reference Book1.0 9

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.

Determination of total Chlorine 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.

Chlorine T / M100

ENMethod Reference Book1.010

EN

Zero

Press the ZERO button. Remove the vial from the

sample chamber.

Empty vial except for a few

drops.

Add DPD No. 1 tablet . Add DPD No. 3 tablet .As an alternative to DPD

No. 1 and No. 3 tablets, a

DPD No. 4 tablet can be

added.

24 mm

Crush tablet(s) by rotating

slightly.

Fill up vial with sample to

the 10 mL mark.

Close vial(s).

Chlorine T / M100

ENMethod Reference Book1.0 11

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.

9

4

5

6

7

8

10

11 12

1

2

3

2 min

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1.012

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

Chlorine T / M100

ENMethod Reference Book1.0 13

EN

a) determination of free, combined and total | e) alternative reagent, used instead of DPD No.1/No.3 in case of turbidity

in the water sample caused by high concentration of calcium and/or high conductivity

Chlorine L / M101

ENMethod Reference Book1.014

EN

Chlorine L M101

0.02 - 4.0 mg/L Cl2 a) CL6

DPD

Material

Required material (partly optional):

Reagents Packaging Unit Part Number

DPD 1 Buffer Solution, Blue Bottle 15 mL 471010

DPD 1 Buffer Solution 100 mL 471011

DPD 1 Buffer Solution 1 pc. 471016

DPD 1 Reagent Solution, Green Bottle 15 mL 471020

DPD 1 Reagent Solution 100 mL 471021

DPD 1 Reagent Solution 1 pc. 471026

DPD 3 Solution, Red Bottle 15 mL 471030

DPD 3 Solution 100 mL 471031

DPD 3 Solution 1 pc. 471036

DPD Reagent Set 1 pc. 471056

Available Standards

Title Packaging Unit Part Number

ValidCheck Chlorine 1,5 mg/l 1 pc. 48105510

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.

Chlorine L / M101

ENMethod Reference Book1.0 15

EN

Preparation

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1.016

EN

Determination of free chlorine with liquid reagent

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.

Sample

6

Sample

2

Hold cuvettes vertically

and add equal drops by

pressing slowly.

Add 6 drops DPD 1 Buffer

Solution to the sample

vial.

Add 2 drops DPD

1 Reagent Solution to the

sample vial.

Chlorine L / M101

ENMethod Reference Book1.0 17

EN

Fill up vial with sample to

the 10 mL mark.

Close vial(s). Invert several times to mix

the contents.

Sample

Test

Place sample vial in the

sample chamber. Pay

attention to the positioning.

Press the TEST (XD:

START)button.

The result in mg/L free chlorine appears on the display.

Determination of totale Chlorine with liquid reagent

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.

Chlorine L / M101

ENMethod Reference Book1.018

EN

Zero

Press the ZERO button. Remove the vial from the

sample chamber.

Empty vial.

Sample

6

Sample

2

Hold cuvettes vertically

and add equal drops by

pressing slowly.

Add 6 drops DPD

1 Buffer Solution to the

sample vial.

Add 2 drops DPD

1 Reagent Solution to the

sample vial.

Sample

3

Add 3 drops DPD

3 Solution to the sample

vial.

Fill up vial with sample to

the 10 mL mark.

Close vial(s).

Chlorine L / M101

ENMethod Reference Book1.0 19

EN

Sample

Test

Invert several times to mix

the contents.

Place sample vial in the

sample chamber. Pay

attention to the positioning.

Press the TEST (XD:

START)button.

9

4

5

6

7

8

10

11 12

1

2

3

2 min

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 L / M101

ENMethod Reference Book1.020

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.

• Concentrations above 4 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 this case, 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

Conformity

EN ISO 7393-2

a) determination of free, combined and total

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