Lovibond 00386449 - MD1x0/200 - Iron (TPTZ) PP, Iron PP, Iron T Benutzerhandbuch

Lovibond® Water Testing

Tintometer® Group

Manual of Methods

MD 100 • MD 110 • MD 200

Iron

EN

Manual of Methods

Page 4

DE

Methodenhandbuch

Seite 22

ES

Manual de Métodos

Página 42

FR

Méthodes Manuel

Page 62

IT

Manuale dei Metodi

Pagina 82

PT

Métodos Manual

Página 102

NL

Handboek Methoden

Zijde 122

ZH

方法手册

Page 142

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Method Reference Book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Method Reference Book 5

EN

Iron T / M220

ENMethod Reference Book1.06

EN

Iron T M220

0.02 - 1 mg/L Fe FE

Ferrozine / Thioglycolate

Material

Required material (partly optional):

Reagents Packaging Unit Part Number

Iron II LR (Fe2+) Tablet / 100 515420BT

Iron II LR (Fe2+) Tablet / 250 515421BT

Iron LR (Fe2+ und Fe3+) Tablet / 100 515370BT

Iron LR (Fe2+ und Fe3+) Tablet / 250 515371BT

Preparation

1. Water that has been treated with organic compounds such as corrosion inhibitors,

must be oxidised where necessary to break down the iron complex. 1 ml of

concentrated Sulphuric acid(≥ 95 %) and 1 ml concentrated Nitric acid(≥ 65 %) is

therefore added to to 100 ml water sample and boiled down to approximately half

the volume. After cooling down, the digestion procedure is continued.

Remarks

1. This method is for the determination of total dissolved Fe2+ and Fe3+.

2. For the determination of Fe2+, the IRON (II) LR Tablet, instead of the IRON LR

Tablet is used.

Iron T / M220

ENMethod Reference Book1.0 7

EN

Digestion

100 mL 1 mL

9

4

5

6

7

8

10

11 12

1

2

3

10 min

Fill a suitable sample

vessel with 100 mL

sample .

Add 1 mL concentrated

sulfuric acid (≥ 95 %) .

The sample is to be heated

for 10 minutes, or for

as long as it takes for

everything to be completely

dissolved.

25 ºC

15 ºC

100 mL

Allow the sample to cool to

room temperature.

Adjust pH-value of the

sample with ammonia

solution (10-25 %) to 3-5.

Fill the sample with

deionised water to 100 mL

.

This sample is used for the analysis of total solved and dissolved Iron.

Determination of Iron (II,III), dissolved with Tablet

Select the method on the device.

For testing of dissolved and undissolved Iron, carry out the described digestion.

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.

Iron T / M220

ENMethod Reference Book1.08

EN

Zero

Press the ZERO button. Remove the vial from the

sample chamber.

24 mm

Add IRON LR tablet. Crush tablet(s) by rotating

slightly.

Close vial(s).

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.

Iron T / M220

ENMethod Reference Book1.0 9

EN

9

4

5

6

7

8

10

11 12

1

2

3

5 min

Wait for 5 minute(s)

reaction time.

Once the reaction period is finished, the measurement takes place automatically.

The result in mg/L Iron appears on the display.

Iron T / M220

ENMethod Reference Book1.010

EN

Chemical Method

Ferrozine / Thioglycolate

Appendix

Interferences

Removeable Interferences

1. The presence of copper increases the test result by 10 %. At a concentration of 10

mg/L copper in the sample, the measurement result is increased by 1 mg/L iron.

The interference can be eliminated by the addition of thiourea

Method Validation

Limit of Detection 0.01 mg/L

Limit of Quantification 0.016 mg/L

End of Measuring Range 1 mg/L

Sensitivity 0.92 mg/L / Abs

Confidence Intervall 0.013 mg/L

Standard Deviation 0.005 mg/L

Variation Coefficient 1.23 %

Bibliography

Photometrische Analyse, Lange/ Vjedelek, Verlag Chemie 1980, p. 102

Iron PP / M222

ENMethod Reference Book1.012

EN

Iron PP M222

0.02 - 3 mg/L Feg) FE1

1,10-Phenanthroline

Material

Required material (partly optional):

Reagents Packaging Unit Part Number

VARIO Ferro F10 Powder /

100 Pieces

530560

VARIO Ferro F10 Powder /

1000 Pieces

530563

Preparation

1. Iron oxide requires mild, strong or Digesdahl digestion before the analysis (digestion

process with acid).

2. Very strong alkaline or acidic water samples should be adjusted to between pH 3

and pH 5 before the analysis.

3. Water samples containing visible rust should be allowed to react for at least five

minutes.

4. Water that has been treated with organic compounds such as corrosion inhibitors,

must be oxidised where necessary to break down the iron complex. 1 ml of

concentrated Sulphuric acid (≥ 95 %) and 1 ml concentrated Nitric acid (≥ 65 %) is

therefore added to to 100 ml water sample and boiled down to approximately half

the volume. After cooling down, the digestion procedure is continued.

Remarks

1. This method is for the determination of all forms of dissolved iron and most forms of

undissolved iron.

2. Accuracy is not affected by undissolved powder.

Iron PP / M222

ENMethod Reference Book1.0 13

EN

Digestion

100 mL 1 mL

9

4

5

6

7

8

10

11 12

1

2

3

10 min

Fill a suitable sample

vessel with 100 mL

sample .

Add 1 mL concentrated

sulfuric acid (≥ 95 %) .

The sample is to be heated

for 10 minutes, or for

as long as it takes for

everything to be completely

dissolved.

25 ºC

15 ºC

100 mL

Allow the sample to cool to

room temperature.

Adjust pH-value of the

sample with ammonia

solution (10-25 %) to 3-5.

Fill the sample with

deionised water to 100 mL

.

This sample is used for the analysis of total solved and dissolved Iron.

Determination of Iron (II,III), dissolved with Vario Powder Packs

Select the method on the device.

For testing of Iron with tablet, carry out the described digestion.

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.

Iron PP / M222

ENMethod Reference Book1.014

EN

Zero

Press the ZERO button. Remove the vial from the

sample chamber.

Sample

Add Vario FERRO

F10 powder pack.

Close vial(s). Invert several times to mix

the contents.

Sample

Test

9

4

5

6

7

8

10

11 12

1

2

3

3 min

Place sample vial in the

sample chamber. Pay

attention to the positioning.

Press the TEST (XD:

START)button.

Wait for 3 minute(s)

reaction time.

Once the reaction period is finished, the measurement takes place automatically.

The result in mg/L Iron appears on the display.

Iron PP / M222

ENMethod Reference Book1.0 15

EN

Chemical Method

1,10-Phenanthroline

Appendix

Interferences

Persistant Interferences

1. Iridium interferes with the test.

According to

DIN 38406-E1

Standard Method 3500-Fe-1997

US EPA 40 CFR 136

g) Reagent recovers most insoluble iron oxides without digestion

Iron (TPTZ) PP / M223

ENMethod Reference Book1.016

EN

Iron (TPTZ) PP M223

0.02 - 1.8 mg/L Fe FE2

TPTZ

Material

Required material (partly optional):

Reagents Packaging Unit Part Number

VARIO Iron TPTZ F10 Powder /

100 Pieces

530550

Preparation

1. Digestion is required for the determination of total Iron. The TPTZ reagent recovers

most iron oxides without digestion.

2. All glassware must first be rinsed with diluted 1:1 Hydrochloric acid solution before

the analysis and then rinsed with deionised water to remove iron deposits that can

cause slightly high results.

3. Strong alkaline or acidic water samples should be adjusted between pH 3 and pH 8

before the analysis (use 0.5 mol/l Sulphuric acid or 1 mol/l Sodium hydroxide).

4. Water that has been treated with organic compounds such as corrosion inhibitors,

must be oxidised where necessary to break down the iron complex. 1 ml of

concentrated Sulphuric acid (≥ 95 %) and 1 ml concentrated Nitric acid (≥ 65 %) is

therefore added to to 100 ml water sample and boiled down to approximately half

the volume. After cooling down, the digestion procedure is continued.

Iron (TPTZ) PP / M223

ENMethod Reference Book1.0 17

EN

Digestion

100 mL 1 mL

9

4

5

6

7

8

10

11 12

1

2

3

10 min

Fill a suitable sample

vessel with 100 mL

sample .

Add 1 mL concentrated

sulfuric acid (≥ 95 %) .

The sample is to be heated

for 10 minutes, or for

as long as it takes for

everything to be completely

dissolved.

25 ºC

15 ºC

100 mL

Allow the sample to cool to

room temperature.

Adjust pH-value of the

sample with ammonia

solution (10-25 %) to 3-5.

Fill the sample with

deionised water to 100 mL

.

This sample is used for the analysis of total solved and dissolved Iron.

Determination of Iron, total with Vario Powder Pack

Select the method on the device.

For testing of total Iron, carry out the described digestion.

Blank

10 mL

Sample

10 mL

Prepare two clean 24 mm

vials. Mark one as a blank.

Put 10 mL deionised

water in the blank.

Put 10 mL sample in the

sample vial.

Iron (TPTZ) PP / M223

ENMethod Reference Book1.018

EN

SampleBlank

30 sec.

Add a Vario IRON TPTZ

F10 powder pack in each

vial.

Close vial(s). Mix the contents by shaking.

(30 sec.).

9

4

5

6

7

8

10

11 12

1

2

3

3 min

Blank

Press the ENTER button. Wait for 3 minute(s)

reaction time.

Place blank in the sample

chamber. Pay attention to

the positioning.

Zero

Sample

Press the ZERO button. Remove the vial from the

sample chamber.

Place sample vial in the

sample chamber. Pay

attention to the positioning.

Iron (TPTZ) PP / M223

ENMethod Reference Book1.0 19

EN

Test

Press the TEST (XD:

START)button.

The result in mg/L Iron appears on the display.

Iron (TPTZ) PP / M223

ENMethod Reference Book1.020

EN

Chemical Method

TPTZ

Appendix

Interferences

Persistant Interferences

When interferences occur, colour development is inhibited or a precipitate is formed. The

values refer to a standard with an iron concentration of 0.5 mg/L.

Interference from / [mg/L]

Ca 4

Cr3+ 0.25

Cr4+ 1.2

Co 0.05

Cu 0.6

CN-2.8

Mn 50

Hg 0.4

Mo 4

Ni 1

NO2 -0.8

Bibliography

G. Frederic Smith Chemical Co., The Iron Reagents, 3rd ed. (1980)

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