Forty Freeze-Thaw Rounds at Minus Eighteen: Picking a SAP Grade
A 420 g/g SAP shed 8.4 percent of its water after 40 freeze-thaw cycles; a 280 g/g grade shed 1.9. What to specify instead of free-swell absorbency.
Reusable Versus Single-Use SAP Ice Packs: A Total Cost View
On the quotation, the reusable pack is 3.50 and the single-use pack is 0.35. Ten to one, so the reusable one must win over a season – except that the quotation is the only place where that ratio exists. Once return freight, washing, losses and the labour of sorting enter the calculation, the p…
