For the ISO 4406-99 Solid contamination code, a range number of 16 indicates how many particles per ml?

The ISO 4406-99 standard provides a classification for the solid contamination of hydraulic fluids and identifies particle counts within specific ranges. When a range number of 16 is referenced, it directly indicates the number of particles per milliliter in that specific contamination classification.

In this context, a range number of 16 corresponds to a particle count of between 1300 and 2500 particles per milliliter. This classification helps to determine the cleanliness level of hydraulic fluids and is crucial for evaluating the potential impact of solid contaminants on machinery performance and reliability. By understanding these contamination levels, technicians can effectively assess and maintain fluid cleanliness, ultimately extending the life of machinery and preventing breakdowns.

The other ranges provide counts for lower levels of contamination but do not align with the specified range number of 16 as per ISO 4406-99. Hence, the selection of 1300-2500 particles per milliliter is both accurate and significant for interpreting solid contamination levels in machinery lubrication.