Dishwashing Chemistry 101

Diane Hoffmann

What things impact the performance of the Dishwasher?

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How to get the Most out of your Dishwasher

• Loading the dishwasher– Soil towards bottom / Sprayer Arm– Avoid nesting– Dishwasher Safe Items

• Make sure Dishwasher is filling with Hot Water

• Make sure you are using the Right Detergent

– Freshness– Types of Cleaning agents and stains

• Make sure you purchase any Additives that will enhance your performance

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61.556.4

50.144.4

38.833.5

26.922.0 18.4 14.6

21.924.8

25.0

25.2

25.2

25.3

24.7

22.720.7

18.0

16.7 18.824.9

30.336.0

41.248.4

55.460.9

67.4

0%

20%

40%

60%

80%

100%

20

02

20

03

20

04

20

05

20

06

20

07

20

08

20

09

20

10

20

11

Powders Gels Monodose

Dishwashing Detergents are Changing

ACNielsen Homescan Panel: ending Q4 2009, 2006, Europe Yr. 1 = 1990, USA Yr. 1 = 1999

The European Market Provides a Clear Road Map to the Future of ADWD in Canada!

CONFIDENTIAL – Property of Reckitt Benckiser

Europe

76.0 74.6 75.0 73.4 70.6 65.358.1 52.2 48.2

39.131.0 24.4 19.4 15.4 10.9 6.9

20.8 19.9 18.1 16.613.7

11.610.2

8.84.5

6.4

5.95.0

3.01.5

1.00.5

3.2 5.5 6.9 10.0 15.723.1

31.739.0

47.354.5

63.170.6

77.6 83.1 88.1 92.6

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

Year

% $

Sal

es

Powder Gel Monodose

USA

46.5 43.7 40.3 36.6 35.7 32.2 32.7 30.5 27.3 25.5 21.1 18.0

39.0 40.239.9

38.1 39.038.2 36.9

33.2 35.531.4

26.8 28.5

14.5 16.1 19.8 25.3 25.3 29.6 30.4 36.3 37.2 43.152.1 53.5

0%

20%

40%

60%

80%

100%

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Year

% $

Sal

es

Powder Gel Monodose

Canada

Enzymes are used in today’s automatic dishwashing cleaners to break down the

below stains.

- protein-based stains

- starch-based stains

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In general, enzymes used in ADW

cleaners work best at temperatures

around 122°F – Temperature at the

beginning of the main wash cycle

Rel

ativ

e to

tal a

ctiv

ity %

Protease AmylaseTemperature, °F

86 104 122 140 158 176

Egg

Oatmeal

Macaroni & Cheese

The bleach and activator eliminates certain soils (e.g. tea and coffee stains) by oxidizing them

and make them water removable

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Oxygen Bleach + Activator

Percarbonate /TAED

Percarbonate

Temperature, °F

Rem

issi

on in

crea

se,

%

(Max. activity between 122 - 158°F (= 50 - 70°C)

34 68 104 140 176

15

20

5

10

25

30

In general, bleach used in ADW

cleaners work best at temperatures

around 140°F – High Temperature

reached during the main wash cycle

White Powder• Enzymes

• Bleach activator

Light Blue Powder• Bleach

• Builders

Red PowerBall Shine Gel• Surface active ingredients

(rinse function)

PVOH Shell• 3 separate compartments

• Separation of ingredients• Dissolves completely

• Lowers the surface tension of water

What makes Quantum work so well?

1. Detergent (Bleach and Enzyme)

2. Rinse function

3. Etch Protection

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Technician Survey - July 2011 (212 Responses – Top reasons for repair calls)

• Residue left on glasses and cutlery – 172 techs• Leftover food particles on items – 157 techs• Items come out wet from DW – 141 techs

• Hard Water/ Limescale issues – 131 techs• Odor coming from DW – 104 techs

212 Technicians were interviewed via Survey Monkey in July 2011

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Finish® Jet-Dry® Rinse Agent

The main tasks of the rinse agent are …

- To ensure shiny dishes

- To assist the drying function

Lowers the surface tension of water and turn a

droplet into a thin layer which …

- Will “sheet” off vertical surfaces (plates, glasses, etc)

- Can more easily evaporate

- Polymer helps with the shine

high surfacetension

Residue is visible

+ Rinse Agent

low surface tension

Residue is invisible Confidential – Property of RB

Finish® Dishwasher Cleaner

Home Use Test - 7 months ofuse in extremely hard water

Before

Before

After

After

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Full corrosion Partial corrosion Line corrosion Iridescent corrosion

Types of Glass Corrosion (Etching) – Caused by Soft Water

Vinegar Test

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Questions??