There's additional details on there website. They recommend a good charcoal filter respirator.
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What I see as the main difference is that Stewart Systems uses distilled water for thinning as opposed to MEK or other solvent based thinner. Using a HVLP sprayer which minimizes overspray and a suitable mask to avoid inhaling particulate is much less toxic IMHO. I have used 3 different systems and in future Stewart's is the only one for me!
Is there a significant difference of weight between the two in its finite state?:rolleyes:
I don't think there is a significant difference in system weight. More likely depends on application skills and finish desired.