The DST-1000 operates on the principle of sub-boiling. It consists of a PFA still with an electric heating source and a PFA collection system. Low grade acid is poured into the reservoir via a funnel and gently heated (below boiling point). Pure acid vapor is generated and condenses on the upper surface of the still and is collected in a 1L Savillex PFA bottle. Because the acid never boils, no spitting or splashing occurs, so trace metal contaminants remain in the residual acid in the reservoir, which is drained to waste. The still is air-cooled - no cooling water is needed. The DST-1000 can purify HNO3, HCl, HF, H2O and also water but not H2SO4 or H3PO4 since their boiling points are too high. All wetted surfaces are high purity PFA. Starting with trace metal (ppb level) grade acid at ~$50-$80 for 500mL, the DST-1000 can produce 500mL of high purity (low ppt) grade acid a $400 value - in around 10 hours. The DST-1000 is very easy to use and extremely compact at only 20cm wide, takes up only a small amount of space in a fume hood.

Specifications

Dimensions: 36.5 cm (L) x 20 cm (W) with bottle bracket

Weight: 17lbs (7.25kg).

Height with funnel & stopper 59.0 cm

Still capacity 1L.

115V, 50/60Hz. Power consumption 70W.

Power cord length: 3m (still to control unit), 2m (control unit to grounded outlet)

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