We use a Form Wash for cleaning our parts. So far it works like a charm, but we do loose appr. 200 ml IPA per day due to evaporation out of the closed tank. For comparison, with the old-fashioned wash buckets we do loose only a negligible / not measureable amount per day. The wash buckets do have a sealant put into the top lids, the Form Wash does not … … whyyyy? Please consider including a sealant into the top lid of the Form Wash.