The document discusses factors that impact dishwasher performance such as how items are loaded, water temperature, detergent type, and use of additives. It explains that enzymes work best at certain temperatures to break down proteins and starches, while bleach works best at higher temperatures to oxidize soils. The document also notes common issues reported by technicians like residue, food particles, wet items, hard water staining, and odors. Finally, it provides details on how rinse agents lower surface tension to improve drying and protect against water spots, and how dishwasher cleaners can help with hard water buildup.

1. Dishwashing Chemistry 101
Diane Hoffmann

2. What things impact the performance of the Dishwasher?
Confidential – Property of RB

3. 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
Confidential – Property of RB

4. Dishwashing Detergents are Changing
The European Market Provides a Clear Road Map to the Future of ADWD in Canada!
Europe USA
100% 3.2 5.5 6.9 10.0 100%
90% 15.7 14.5 16.1
20.8 19.9 18.1 23.1 19.8
31.7 25.3 25.3 29.6 30.4
80% 16.6 39.0 36.3 37.2
13.7 47.3 80% 43.1
11.6 54.5 52.1 53.5
70% 63.1
10.2 70.6 39.0
77.6 83.1 40.2
% $ Sales
60% 60% 39.9
8.8
% $ Sales
88.1 92.6
50% 4.5 38.1 39.0
38.2 36.9
6.4 33.2 35.5
40% 76.0 74.6 75.0 73.4 70.6 40% 31.4
65.3 5.9
30% 58.1 26.8
52.2 48.2 5.0 28.5
20% 39.1 3.0
31.0 1.5 46.5 43.7
24.4 19.4 20% 40.3 36.6 35.7
10% 1.0 32.2 32.7 30.5
15.4 10.9 0.5 27.3 25.5
6.9 21.1 18.0
0%
0%
92
94
95
97
98
00
01
03
04
90
91
93
96
99
02
05
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
19
19
19
20
20
19
19
19
19
19
19
19
20
20
20
20
Year Year
Powder Gel Monodose Powder Gel Monodose
Canada
100%
16.7 18.8
24.9
30.3
36.0
80% 41.2
48.4
21.9 55.4
24.8 60.9
67.4
25.0
60% 25.2
25.2
25.3
40% 24.7
22.7
61.5
56.4 20.7
50.1 18.0
44.4
20% 38.8
33.5
26.9
22.0 18.4
14.6
0%
2010
2011
2002
2003
2004
2005
2006
2007
2008
2009
ACNielsen Homescan Panel: ending Q4 2009, 2006, Europe Yr. 1 = 1990, USA Yr. 1 = 1999 Powders Gels CONFIDENTIAL – Property of Reckitt Benckiser
Monodose

5. Enzymes are used in today’s automatic dishwashing cleaners to break down the
below stains.
- protein-based stains
- starch-based stains
Egg
Oatmeal
Macaroni & Cheese
In general, enzymes used in ADW
Relative total activity %
cleaners work best at temperatures
around 122°F – Temperature at the
beginning of the main wash cycle
86 104 122 140 158 176
Temperature, °F Protease Amylase
Confidential – Property of RB

6. The bleach and activator eliminates certain soils (e.g. tea and coffee stains) by oxidizing them
and make them water removable
Oxygen Bleach + Activator
30 Percarbonate /TAED
25
20
Remission increase, %
In general, bleach used in ADW
15
cleaners work best at temperatures
10
Percarbonate around 140°F – High Temperature
5 reached during the main wash cycle
34 68 104 140 176
Temperature, °F
(Max. activity between 122 - 158°F (= 50 - 70°C)
Confidential – Property of RB

7. What makes Quantum work so well?
White Powder
• Enzymes
• Bleach activator
1. Detergent
Red PowerBall Shine Gel
(Bleach and • Surface active ingredients
Enzyme) (rinse function)
Light Blue Powder
2. Rinse function • Bleach
• Builders
3. Etch Protection PVOH Shell
• 3 separate compartments
• Separation of ingredients
• Dissolves completely
• Lowers the surface
tension of water
Confidential – Property of RB

8. 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
Confidential – Property of RB
212 Technicians were interviewed via Survey Monkey in July 2011

9. 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 surface Residue
tension is visible
+ Rinse Agent
low surface Residue
tension is invisible Confidential – Property of RB

10. Finish® Dishwasher Cleaner
Home Use Test - 7 months of
use in extremely hard water
Before After
Before After
Confidential – Property of RB

11. Types of Glass Corrosion (Etching) – Caused by Soft Water
Vinegar Test
Full corrosion Partial corrosion Line corrosion Iridescent corrosion
Confidential – Property of RB

12. Questions??