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Description
Crystal Quest AF-300 Membrane Antifoulant is a powder dosed into the feed stream of reverse osmosis, nanofiltration and ultrafiltration systems at up to 20 mg/L. It is designed for feedwater with high levels of metal oxides, silica and scale-forming minerals.
Highlights
- Inhibits polymerization of reactive silica and disperses colloidal silica
- Inhibits coagulation and deposition of organic and inorganic colloidal particles
- Reduces the rate of membrane fouling, which may lower cleaning requirements
- Effective on high-SDI feedwater, which can reduce the need for added pretreatment equipment and chemicals
- Certified to ANSI/NSF Standard 60 for drinking water production
- Compatible with RO, NF and UF membranes from major manufacturers
Details
Avermont Direct is an authorized Crystal Quest dealer. AF-300 is used in membrane systems treating feedwater prone to silica, metal oxide and colloidal fouling. Dose rate depends on your feedwater, so contact our team if you need help sizing an order.
Need Help?
Free shipping on orders over $200
If you have questions about this product before you order, our team is happy to help.
Email: support@avermontdirect.com
Phone: +1 (844) 455-3695
Hours: Monday–Friday, 9AM–5PM
Live Chat: Available 24/7
| Product | AF-300 membrane antifoulant |
| Form | Powder |
| Maximum Use Level | 20 mg/L |
| Effective pH Range | 5.0 to 10.0 |
| Injection Point | Feed stream, before the static mixer and cartridge filter |
| Shelf Life | Excellent stability; use within 12 months |
| Certification | ANSI/NSF Standard 60 (drinking water production) |
| Compatible Membranes | Reverse osmosis, nanofiltration, ultrafiltration |
| Sizes | 1/2 lb, 1 lb, 5 lbs, 15 lbs, 25 lbs |
- Does not cause flocculation of dissolved polymers, including residual coagulants, iron or aluminum-rich silica
- Effective across a wide range of concentrations
- Frozen product may be thawed and mixed before use
Shipping
- Orders of $200 or more ship free within the contiguous United States. Orders under $200 ship for a flat $9.99.
- In-stock items (shown as “In Stock” on the product page) ordered before 1:00 PM Pacific Time on a business day typically ship within 1–3 business days. Delivery usually takes 3–7 business days after shipping.
- Backorder, Partial Backorder and Custom Order items are not covered by the 1–3 business day processing time. Their estimated restock or ship time is shown in the stock status on the product page before you order.
- Large items ship by freight and are typically delivered curbside. Smaller items ship by ground carrier such as FedEx or UPS.
- We ship to the 48 contiguous states. We do not ship to Alaska, Hawaii or P.O. boxes.
- Please inspect your delivery on arrival and report any concealed damage or missing parts within 24 hours.
Returns
- Returns can be requested within 30 days of delivery. Items must be unused, uninstalled, in new resalable condition and in their original packaging, including the pallet if delivered on one.
- Approved returns are subject to a 15% restocking fee, and return shipping costs are the customer’s responsibility unless the return is the result of our error.
- Installed or used products, custom and made-to-order items, clearance or final-sale items, and replacement parts and accessories are not eligible for return.
Full Shipping Policy Full Return Policy Questions? +1 (844) 455-3695