Water Based Penetrant Product Comparison

	ZL-4C	ZL-405	ZL-425	ZL-440
Penetrant Type	Type 1	Type 1	Type 1	Type 1
Level	N/A	Level ½	Level 1	Level 2
Removal Type	N/A	Water washable	Water washable	Water washable
Method		A	A / C	B / C / D
QPL Qualified Product			✔	✔
AMS 2644			✔	✔
ASME	✔
ASTM E165	✔
ISO 3452-2		✔	✔	✔

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