SAP & Hydrogel Knowledge Centre
How super absorbent polymers work, how to choose between them, and how to use them well — written for growers, buyers and students alike.
Articles
What is a super absorbent polymer (SAP)?5 min read
The material behind hydrogel: what it is made of, why it absorbs so much water, and where it is used.
How agricultural hydrogel works in soil6 min read
Absorb, hold, release, repeat — what happens to a granule in the root zone across an irrigation cycle.
Sodium vs potassium polyacrylate4 min read
Same backbone, different counter-ion — and why that decides whether a polymer belongs in soil.
Synthetic vs starch-based hydrogel4 min read
Field life, absorption and biodegradation — the honest trade-offs between the two families.
Crosslinking, gel strength & particle size5 min read
The three dials that decide how an SAP behaves — and how to specify them.
Absorption under different water conditions4 min read
Why the same hydrogel absorbs less in borewell, saline or hard water — and what to do about it.