How Pure Are Recycled Solvents?

by brblog on July 21, 2019

The recycled purity can depend a lot on the recycler being used.

With a well-designed recycler you can expect high purity recycled solvents. The table below shows typical purity and concentrations.

Purity Table

A manufacturer should be willing to guarantee the recycled product purity and concentration in writing.

Not only should the purity be high but the concentration should be consistent from batch to batch.

Q: How does a recycler make high purity solvents?

The most important design elements is a high quality distillation column.

The distillation column is the device that actually separates the contaminants from the good solvent. A high quality distillation column will yield high quality solvents.

Below is a comparison of a low quality distillation column to a high quality distillation column.

Which distillation column would you prefer?

Pretty obvious, isn’t it?

Recycled Solvent Comparison

Column Packing – rusty nails

Solvent quality – generally poor

Concentration – inconsistent from batch to batch.

Column Packing– highly engineered material made from stainless steel (No rusting).

Solvent quality – Always very high.

Concentration – very consistent from batch to batch.

Stan Purity

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