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Home» FAQ » What is ISO 4406 Filtration Code

What is ISO 4406 Filtration Code

The ISO 4406 standard utilises a three number system to classify system cleanliness — example: 15/13/10. The first number means there are between 160 and 320 particles >4 micron, between 40 and 80 particles >6 micron and between 5 and 10 particles >14 micron

The second number represents particles greater than 6 micron and the third number represents those greater than 14 micron.

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KPL Filtration Pty Ltd (KPL) is an Australian based company, specialising in complete lubricant and fuel filtration solutions. KPL has extensive industry experience and offer full service filtration and technical support to keep your lubricants and fuel exceptionally clean to give your equipment the best protection for improved and prolonged performance. Click here for Company profile and more here .

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