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A new low-cost multipurpose still useful for water, waste water, or sludge sample preparation or other general laboratory applications has been introduced by Hach Chemical Company. Hach's Universal Still pretreats samples for any of the following tests: fluoride, cyanide, arsenic, selenium, phenols, volatile acids, and nitrogen (both albuminoid and ammonia).

The instrument combines a temperature- controlled fast-acting heating mantle and interchangeable glassware assemblies with a simple set-up. The glassware is fastened to illustrated back panels that slide into the fiberglass base. There are three back panel/glassware assemblies to choose from: general purpose, arsenic, and cyanide.