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Open Combination and Hooded Combination Kjeldahl Units have digestion and distillation components for nitrogen determination in one space-saving apparatus.
Open Combination Kjeldahl Units are supported by a sturdy, tubular steel framework, with the distillation apparatus mounted above the digestion portion. Models are available with the capacity to digest and distill up to 12 samples at a time.
Hooded Combination Kjeldahl Units enclose the distillation and digestion apparatus so that process heat may be contained and vented from the laboratory. The hood surrounding the apparatus includes two collars: one for remotely-located exhaust blower connection and one for auxiliary-air blower inlet connection. Models are available that digest and distill up to 18 samples at one time.
Both Kjeldahl Units are available with either a blower exhaust or water ejector system for fume removal. Features• Distillation manifold with seamless stainless steel tubing. No fittings or gaskets are required eliminating a potential leak source.
• Counterflow heat exchanger controls back pressure and maximizes the rate of distillation for uniformity of results.
• Remote-control flow valve allows cooling water volume adjustment.
• Easy-to-read temperature gauge located on the water outlet
• One-piece borosilicate glass connecting bulbs separate liquid from vapors prior to the vapors entering the condenser and effectively traps caustic mist that may carry over to the recovery solution.
• One-piece borosilicate glass delivery tubes with long necks, round bottoms and thick walls to help eliminate pressure fluctuations in the distillation phase.
• Electric distillation and digestion heaters with curved ceramic bases to cradle 500 or 800 ml Kjeldahl digestion flasks.
• Individual infinite-control knobs for electric heaters with variable input from 20-100% capacity
• Chemical-resistant CPVC fume manifold with heat-resistant Teflon nipples that draw chemical fumes from the digestion flasks.
• Full one year warranty |
Options• Blower exhaust system that removes fumes from the digestion flasks. The 1/3 hp direct-drive blower with corrosion-resistant impeller pulls the acid fumes through the manifold and discharges them out the duct connection.
• Water ejector system that removes fumes from the digestion flasks. The water ejector system draws digestion fumes through the chemical-resistant manifold to an aspirator where they are diluted by the water spray and disposed with the effluent water.
• Open Combination Units in 6-place and 12-place models
• Hooded Combination Units in 6-place, 12-place and 18-place models. Hooded models feature epoxy-coated steel construction reinforced with tubular steel and tempered safety glass, horizontal-sliding sashes. Two collars are provided for connection to a remotely-located exhaust blower and optional auxiliary-air blower.
• Various electrical configurations |
Required Accessories• Kjeldahl digestion flasks
• Remote exhaust blower (Hooded models only)
• Ductwork |
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