Documentation, answers, and definitions.

A porous carbon sorbent produced by RWE in Germany from Rhenish lignite, activated continuously in a rotary hearth furnace (Herdofen — hence the name). It is used to adsorb contaminants from water and gas streams.

Mostly in production route and economics. Conventional carbons are typically batch-activated from purchased feedstocks; HOK® is produced continuously from freshly mined lignite at the source. That gives it a consistent character and a cost position suited to high-consumption duties.

As a rule of thumb: powder grades for dosing into biological stages, suspension treatment, and gas injection; granular grades for fixed beds and filters. The right starting point depends on your stream and equipment — that's the first thing we'll discuss. See product grades.

No — and we're careful about the distinction. HOK® is manufactured by RWE in Germany. CGS Carbon supplies and distributes the product in North America and provides application support. Manufacturing claims trace to the manufacturer's documentation.

Yes. Trials typically start with big-bag quantities sized to your dosing rate, supported by the relevant datasheet and SDS. Tell us your duty and expected consumption and we'll propose a trial format.

Bulk silo-truck delivery for high-volume dosing, palletized big bags for standard duty, and containerized shipments for North American supply. Storage is conventional dry storage; the SDS covers handling requirements. See packaging & supply.

Production runs under an ISO 9001-certified quality system. The manufacturer samples the product multiple times daily and analyzes it in its own laboratory. Request the current datasheet for guaranteed values per grade.

We don't claim applications the manufacturer's documentation doesn't support. For PFAS-specific treatment, our parent company Birchtech offers dedicated activated carbon and ion-exchange solutions — we'll connect you to the right team.