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Material compatibility
of components of the
LMG
gripper
s
Test procedure:
Specific specimen parts according to the device in question are submerged in a cleaning agent
solution (application concentration 5%) at a room temperature of 22-23°C.
After a period of 30 min., the specimens are removed, rinsed with clear water and dried.
Evaluation:
Visible damage is evaluated according to the following criteria:
discolouration, corrosion, brittling and swelling.
An untreated original component will serve as reference.
Structure of the specimen after rinsing and drying
Material compatibility
max. 100 %
no visible damage, swelling or discolouration
100
slight corrosion discernible, only partial, no more than 10% of the surface,
no discolouration, brittling or swelling.
80
slight corrosion discernible, only partial, no more than 30% of the surface,
very slight discolouration, no brittling or swelling.
60
medium corrosion discernible, partial, no more than 60% of the surface,
medium discolouration, slight brittling or swelling visible.
failed
Corrosion discernible, more than 60% of the surface damaged,
heavy discolouration, brittling or swelling visible.
failed
Cleaner:
RM 57
(5%) Foam cleaner, neutral
RM 58
(5%) Foam cleaner, alkaline
RM 59
(5%) Foam cleaner, acidic
RM 734 (5%) Foam disinfectant cleaner, alkaline with active chlorine
RM 735 (5%) Disinfectant with quaternary ammonium compound basis
DVG and DGHM-listed
Sample:
The material compatibility of the components/materials:
–
Wiper (red) out of polyurethane (FDA-approved), 94 Shore A
–
Flat gasket (PTFE)
–
Cap (Hostaform C9021
⇒
POM) (D: 12 mm)
–
Cable consisting of stainless steel A4, TPE-S 85 Shore A, 70 EPDM 281 and Ecolast K PP/TPE
is evaluated as positive compared to the Kärcher products tested.
Conclusion:
The products RM 57/ RM 58/ RM 59/ RM 734 and RM 735 can be used for the cleaning of the
above-mentioned components provided that the concentration, exposure time and procedure
described for these products is adhered to.
