performance testing of laundry detergents - · pdf fileperformance testing of laundry...
Post on 12-Mar-2018
242 Views
Preview:
TRANSCRIPT
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Performance testing of laundry detergents
for consumersInternational comparison (stain/soil removal)
Tom Hilgers, Cemille Sakalli
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
A short look back ...
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Test Protocol –! Principle based
–! Includes minimum requirements – free to exceed those but not lower them
–! Can be adapted to different countries/regions, differences in wash habits, wash temperatures, recommended dosages etc
Scope –! Logistics: communication, selection, pick-up, sampling
–! Test execution –! Results: calculation, evaluation, communication
Categories –! HDD, LDD, Laundry Additives
Countries -! Should apply to all A.I.S.E. member countries
Benefits
-! More realistic and more reliable comparison of product qualities for consumers
-! Improvement in test quality
-! Common approach
A.I.S.E. Working Group „Detergent Testing“
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
• We tested 6 HD market detergents (DE)
• 3 powders, 3 liquids
‣ Wash temp. 40°C
‣ Load 3,5 kg
‣ Hardness 2,5 mmol/l
• Evaluation using A.I.S.E. evaluation tool ...
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
55
60
65
70
A C D E F G
59,5
61,2
60,0
67,7
69,0
66,9
AIS
E %
Soi
l Rem
oval
Detergent
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
55
60
65
70
A C D E F G
59,5
61,2
60,0
67,7
69,0
66,9
AIS
E %
Soi
l Rem
oval
Detergent
-3,1
-2,1 -2,1
-3,7
-3,2
-4,0
StiWa Scores * -1
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
55
60
65
70
A C D E F G
59,5
61,2
60,0
67,7
69,0
66,9
AIS
E %
Soi
l Rem
oval
Detergent
-3,1
-2,1 -2,1
-3,7
-3,2
-4,0
Powder Liquid
StiWa Scores * -1
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
55
63
72
80
A C D E F G
68,5
75,7
73,3
79,281,0
77,1
AIS
E %
Soi
l Rem
oval
Detergent
-3,1
-2,1 -2,1
-3,7
-3,2
-4,0
-3,1
-2,1 -2,1
-3,7
-3,2
-4,0
Powder Liquid
MODIFIED STAIN SET
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
• Every test design and evaluation includes ,weighing factors‘ for stain types.
• If the evaluation does not use explicit weighing factors, these factors are determined by the number of stains per group.
Conclusion
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
• A.I.S.E. test results could be more relevant if the dominating impact of the detergents‘ bleach activity would be reduced by
‣ introduction of stain groups into the evaluation, and/or
‣ revision of the stain set.
Conclusion
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
How about other tests?
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Examples of General Performance Tests
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
The test protocols lay out requirements for testing and evaluation of several aspects of laudry detergent performance
• Stain/Soil removal
• Color Maintenance
• Dye Transfer
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Some parameters that may vary
• Lab test vs. wash/wear (StiWa vs. others)
• Cycle / Temperature (30°C / 40°C)
• Water Hardness (varies)
• Load Size (3 to 3,5 kg)
• Composition (mainly CO)
• Ballast Soil
• Stain Set and Evaluation
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
• We tested 8 HD market detergents4 DE, 2 FR, 2 US
• 3 powders, 5 liquids
‣ Wash temp. 40°C
‣ Load 3,5 kg
‣ Hardness 2,5 mmol/l
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Impact of Ballast Soil:
We tested with and without SBL2004(with clean loads ...)
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
!80%%
!60%%
!40%%
!20%%
0%%
20%%
40%%
60%%
80%%
100%%
A% B% C% D% E% F% G% H%
1%AISE%
0%AISE%
Example: Results for A.I.S.E Stain Set (A.I.S.E. eval.)
With SBL
No SBL
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
No SBL With SBL
264 significant 520
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
• Ballast soil is necessary to avoid misleading results e.g. due to unrealistic foam levels
• Ballast soil SBL2004 increases differentiation(giving a more realistic estimate of real performance)
Conclusion
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Impact of Stain Set:
AISE set is widely used in Europe
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Response Stain Which
Saldo
TAEN
K
Que
7Cho
isir
AISE
ASTM
7D4265
2007
Consum
erRe
ports
Bleach Tea x x x x x x xBleach Coffee x x x x x x xBleach Wine x x x x x x xBleach Fruit3Juice x xxx x x x x xBleach Tomato x x x x xBleach Mustard x x x x x xBleach Carrot x x x xBleach/Enzymes Grass x x x x x x xBleach/Enzymes/Detergency Grass/Mud x x xEnzymes Chocolate x x x x x xEnzymes Blood x x x x x xDetergency Frying3Fat x x x xDetergency Mineral3Oil x x x xDetergency MakeBup x x x x x x xBleach Ink x xBleach Blueberries x xEnzymes Egg xEnzymes Potato3Starch xEnzymes Rice3Starch xEnzymes Dressing xEnzymes Spaghetti3Sauce x xEnzymes Marmelade xEnzymes Chocolate3Drink xEnzymes Meat3Sauce x xDetergency Soot xDetergency Olive3Oil xDetergency Lipstick xDetergency Used3Motor3Oil x xDetergency Sebum/Pigment x xDetergency Clay x x
Tested Stains:
... plusmanyStainsused byStiWanot onlyon CO
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Impact of Stain Set:
We used all stains described in WHICH A.I.S.E. (+ proposed extension) Consumer Reports Stiftung Warentest
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
!100%%
!80%%
!60%%
!40%%
!20%%
0%%
20%%
40%%
60%%
80%%
100%%
A% B% C% D% E% F% G% H%
1%AISE%
1%ConsRep%
1%EcolProp%
1%S>Wa%
1%Which%
Example: Results with SBL - A.I.S.E. evaluation
AISE
Cons.Rep
AISE prop.
StiWa
Which
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Impact of Stain Set
Comparable: WHICH A.I.S.E. (+ proposed extension) Consumer Reports
Slightly different: Stiftung Warentest
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
!100%%
!80%%
!60%%
!40%%
!20%%
0%%
20%%
40%%
60%%
80%%
100%%
A% B% C% D% E% F% G% H%
1%AISE%
1%ConsRep%
1%EcolProp%
1%S>Wa%
1%Which%
Can the results be trusted?
AISE
Cons.Rep
AISE prop.
StiWa
Which
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
!100%%
!80%%
!60%%
!40%%
!20%%
0%%
20%%
40%%
60%%
80%%
100%%
A% B% C% D% E% F% G% H%
1%AISE%
1%ConsRep%
1%EcolProp%
1%S>Wa%
1%Which%
AISE
Cons.Rep
AISE prop.
StiWa
Which
< weighted groups, less bleach contr.
2,1 2,0 4,2 2,6 (real StiWa Scores)
!3#
!2,5#
!2#
!1,5#
!1#
!0,5#
0#A# B# C# D#
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
!100%%
!80%%
!60%%
!40%%
!20%%
0%%
20%%
40%%
60%%
80%%
100%%
A% B% C% D% E% F% G% H%
1%AISE%
1%ConsRep%
1%EcolProp%
1%S>Wa%
1%Which%
Real StiWa Scores:
2,1 2,0 4,2 2,6
!3#
!2,5#
!2#
!1,5#
!1#
!0,5#
0#A# B# C# D#
more realistic ...
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
Normalization, evaluation per stain group and weighted scoring using GPS Tools:
© 2013 Dr. Tom Hilgers, www.testmaterials.com - Testmaterials & Concepts wfk
• Stain selection IS (of course) important
• Stain selection as in or similar to A.I.S.E. appear to be widely used, leading to comparable results of different tests in Europe (and USA?)
• Balanced contribution of stain (response) groups allows realistic and therefore relevant overall scoring (still too much impact of bleach in A.I.S.E. and others)
Conclusion
top related