Try using the Harvest Forum. They might have the answer. https://www.houzz.com/discussions/harvest

Or, you could just call the number on the back of the bpx.

I just found this quote on line, so I think I’m good.

“Most low-sugar pectins have preservatives in the box (except for Pomona’s). For Sure Jell Less or No Sugar it is the sodium citrate. But every brand uses something different”

If the first ingredient is dextrose how come it says there is no sugar in it? Dextrose is sugar.