Ultrapure Water
Ultrapure water (UPW) is treated to the highest levels of purity for all contaminant types (e.g. organic and inorganic compounds, dissolved gases). It is required in laboratories and in the semiconductor industry as a solvent to prepare solutions and to clean surfaces.
Ionic and non-ionic contaminants can lead to defects in today’s high performance integrated circuits. Therefore, the industry sets premium purity standards and requires very fast rinse profiles to reduce downtimes of the plant.
Learn about our products and services for industrial water treatment
Industrial and Potable Water Treatment brochure (pdf)
Ion Exchange Resins for Water Treatment
Product Overview (pdf)
The process flow below shows the different involvement of ion exchange resins – starting with a scavenger resin for the removal of organics, a softener to protect the RO plant, followed by semiconductor grade clean strong acid and strong base resins. The two following mixed bed filters with ultrapure grade resins are the last line of protection from trace of chemical contaminants.
Silica and boron are not well removed by membranes processes, but will be reduced below 1 ppb in subsequent ion exchange steps.
From primary treatment to final polishing, CHEMRA offers an extensive range of products and its expertise to assist the end user in the phases of ultra pure water production. These resins can be used either separately in large operating units or in ready to use mixed bed filters on industrial and laboratory scale.
Chemra range of Ultra Pure Water (UPW) ion exchange resins include:
| Trademark | Type
|
Capacity (eq/L) |
Uniformity Coefficient |
Remarks | |
|---|---|---|---|---|---|
Cation removal |
TREVERJET UPC1400/H | SAC |
≥ 2.0 |
≤ 1.2 |
High operating capacity gel resin for individual exchanger or together with UPA1400/OH in mixed bed unit |
| TREVERJET UPC4000/H | SAC |
≥ 1.9 |
≤ 1.1 |
High purity, gel resin, for individual exchanger or together with UPA4000/OH in mixed bed unit |
|
Anion removal | TREVERJET UPA1400/OH | SBA |
≥ 1.0 |
≤ 1.2 |
High operating capacity gel resin for individual exchanger or together with UPC1400/H in mixed bed unit |
| TREVERJET UPA4000/OH | SBA |
≥ 1.0 |
≤ 1.1 |
High purity, gel resin for individual exchanger or together with UPC4000/OH in mixed bed unit |
|
Mixed Bed | TREVERJET UPM1000 | SAC/SBA |
≥ 2.0/≥ 1.0 |
≤ 1.2 |
Regenerable mixed bed for the production of ultrapure water |
| TREVERJET UPM4000 | SAC/SBA |
≥ 1.9/≥ 1.0 |
≤ 1.1 |
Low rinse, high purity, low TOC and metals leakage. Regenerable mixed bed for the production of ultrapure water |
|
| TREVERJET UPM4100 | SAC/SBA |
≥1.9 /≥ 1.0 |
≤ 1.1 |
Low rinse, very high purity, very low TOC and metals leakage. Mixed bed for the polishing of ultrapure water |