Test Report Of Stain Removal

 

Test Report Of Stain Removal

TEST REPORT
Test Date: 03/18/98
Test Item: Old type laundry ball was compared with Type A, Type B and Type C on the basis of performance.
(1) Soil removal.
(2) PH value.
(3) the weight and shape of solid pellets after 30 cycles at 20 oC.
Procedure: Add the tap water into the washing machine up to the middle water level. The object washed is smeary cloth 400 (USA Scientific Services S/D Inc.)
Results:
1) Soil removal: old type laundry ball is smaller than Type A, Type B and Type C (Old type <Type A, Type B and Type C).

 

Old Type

Type A, Type B and Type C

After the first wash

Soil removal (%)

12.08

15.05

PH value

8.98

9.14

After 10th washes

 

 

Soil removal (%)

8.23

10.84

Ph value

7.72

8.51

After 20th washes

 

 

Soil removal (%)

8.86

9.81

Ph value

9.81

8.09

After 30th washes

 

 

Soil removal (%)

9.03

9.46

Ph value

7.03

7.43
<tap water soil removal (%) 8.78; PH level 7.06>
2) PH value: Old type laundry ball is smaller than Type A, Type B and Type C (Old type <Type A, Type B and Type C)
3) After 30 washes and drying at 40 oC, the weight of the pellets of old type laundry ball is 18g, but Type A, Type B and Type C is 34.5g.
4) One part of pellets of old type laundry ball is sodium soap about weight 10g, this soap pellets are finished after 30 washes.
SUMMARY
Type A, Type B and Type C performed better than old type in soil removal and valid washes.

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