What is WTZ 200®?
WTZ 200® is a natural clinoptilolite zeolite supplied as dry granules and powders, and unique among natural zeolites for its light weight and high cation exchange capacity (CEC).
Its chemical composition and affinity for radionuclides make it a proven and highly effective media for nuclear remediation applications, and its surface area is valued in gas separation and specialty desiccant markets.
The SDS lists its recommended uses as water filtration, sorbent, odor control/desiccant, and flow agent. It is not FDA approved for human consumption. Fluid Tech natural zeolite has no additives or materials that require special treatment; some Fluid Tech products, however, are treated to enhance their use for special applications.
Technical specifications
| Form | Granules & powders |
|---|---|
| Color | Tan – green |
| Pore diameter | 4.0 Angstroms |
| Pore volume | 15% |
| Specific surface area | 40 m²/g |
| Bulk density | 45 – 80 lbs/ft³ (760 – 1,283 kg/m³) |
| Solid density | 100 lbs/ft³ (1,603 kg/m³) |
| Alkali stability | pH of 7 – 10 |
| Acid stability | pH of 3 – 7 |
| Thermal stability | 1,202 °F (650 °C) |
| Ion exchange capacity | 1.85 milliequivalents/g |
Typical properties as published on the Fluid Tech Ion Exchange Media page.
What is WTZ 200® made of?
WTZ 200® is a natural clinoptilolite zeolite. Typical chemical analysis:
| SiO₂ | 69.1 |
|---|---|
| Al₂O₃ | 11.9 |
| Fe₂O₃ | 0.7 |
| CaO | 0.8 |
| MgO | 0.4 |
| Na₂O | 3.5 |
| K₂O | 3.8 |
| MnO | 0.02 |
| TiO₂ | 0.1 |
Major exchangeable cations: Rb⁺, Na⁺, Ba²⁺, Mg²⁺, Li⁺, Ag⁺, Sr²⁺, Fe³⁺, K⁺, Cd²⁺, Cu²⁺, Co³⁺, Ca⁺, Pb²⁺, Ca²⁺, Al³⁺, NH₄⁺, Zn²⁺, Hg²⁺, Cr³⁺
What applications does WTZ 200® serve?
WTZ 200's end-use applications include hazardous waste cleanup of arsenic and thallium, radioactive waste control, personal hygiene products, and air and water filtration and purification.
- Nuclear remediation — proven, highly effective media with an affinity for radionuclides
- Hazardous waste cleanup of arsenic & thallium
- Radioactive waste control
- Air & water filtration and purification
- Gas separation & specialty desiccant markets
- Personal hygiene products
- Sorbent, odor control/desiccant, flow agent (per SDS recommended use)
Not FDA approved for human consumption.
When should you choose WTZ 200® vs WTZ 100®?
Choose WTZ 200® where its light weight, its affinity for radionuclides, and its thermal stability to 650 °C (1,202 °F) matter — it is a proven and highly effective media for nuclear remediation, including hazardous waste cleanup of arsenic and thallium, and is valued in gas separation and specialty desiccant markets.
WTZ 100®, a chabazite zeolite, offers a 520 m²/g surface area, a 2.50 meq/g ion exchange capacity, and stability from pH 3 through 12. Its high CEC and abrasion resistance make it an ideal water filtration media, and its pozzolanic properties prove highly valuable in cementitious products.
Both grades are covered by the same Safety Data Sheet, and both serve radioactive waste control and water filtration and purification. Need help matching a grade to your waste stream? Ask our team.
Is WTZ 200® hazardous to handle?
WTZ 200® carries a GHS "Warning" signal word: it may be harmful if swallowed and may cause mild skin irritation, eye irritation, and respiratory irritation — avoid breathing dusts and wear eye/face protection, protective gloves, and a NIOSH-approved dust mask or respirator where dust occurs.
- Not combustible or flammable (NFPA: Health 1 · Flammability 0 · Reactivity 0)
- Not regulated as dangerous goods for transport (DOT, IATA, IMDG)
- Does not contain asbestos or fibrous zeolite minerals; may contain greater than 0.10% free silica (crystalline silica was not detected by X-ray diffraction analysis but may be present above the 0.10% notification level)
- Store in a cool, dry area; keep container closed; do not allow water to contact the product until time of use to preserve product utility
- No known adverse effects to the environment
Frequently asked questions
What is WTZ 200® made of?
WTZ 200® is a natural clinoptilolite zeolite supplied as dry granules and powders. Its typical chemical analysis is SiO₂ 69.1, Al₂O₃ 11.9, Fe₂O₃ 0.7, CaO 0.8, MgO 0.4, Na₂O 3.5, K₂O 3.8, MnO 0.02, TiO₂ 0.1. It does not contain asbestos or fibrous zeolite minerals. The shared WTZ 100/200 Safety Data Sheet carries a single composition entry, listed under the chabazite synonym — it does not give a separate chemical identity for the clinoptilolite grade.
What applications is WTZ 200® used for?
Its chemical composition and affinity for radionuclides make it a proven and highly effective media for nuclear remediation applications, and its surface area is valued in gas separation and specialty desiccant markets. End-use applications include hazardous waste cleanup of arsenic and thallium, radioactive waste control, personal hygiene products, and air and water filtration and purification. It is not FDA approved for human consumption.
What is the difference between WTZ 200® and WTZ 100®?
WTZ 200® is a clinoptilolite zeolite characterized by its light weight, a 1.85 meq/g ion exchange capacity, thermal stability to 650 °C (1,202 °F), and an affinity for radionuclides that makes it a proven media for nuclear remediation, including hazardous waste cleanup of arsenic and thallium. WTZ 100® is a chabazite zeolite with a 520 m²/g surface area, a 2.50 meq/g ion exchange capacity, abrasion resistance, pozzolanic properties, and stability from pH 3 through 12.
Is WTZ 200® hazardous to handle?
WTZ 200® carries a GHS "Warning" signal word: it may be harmful if swallowed and may cause mild skin, eye, and respiratory irritation, so avoid breathing dusts and wear eye/face protection, gloves, and a NIOSH-approved dust mask or respirator where dust occurs. The product is not combustible or flammable and is not regulated as dangerous goods for transport. Store in a cool, dry area with the container closed, and do not allow water to contact the product until time of use to preserve product utility.
Scoping a nuclear remediation or filtration application?
Tell us about your waste stream and our team will help match the right media to your application.
Content reviewed August 2026 · WTZ 100/200 Safety Data Sheet FTL-080-0020, Revision 2 (January 18, 2020) · fluidtechllc.com Ion Exchange Media product page.