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Waters Alliance Column Heater Module box**The unit was tested and working to specifications. Buyer can expect working machine and 30-day warranty. Has slight cosmetic blemishes from normal use. See photos for further details.(Please be advised that any warranty/guarantee/return policy provided from the seller is between the buyer and the seller only. Bid on Equipment is not and cannot be held responsible in any way. Please reference our Terms and Conditions for further information.)The 2795 Separations (Waters 2795 Separations Module System not included), Module Column Heater maintains the column at temperatures from 5 C above ambient (minimum of 20 C) to 60 C. You can enable an alarm to warn you if the temperature varies outside the range you specify. The procedure to install the column heater is described. Valve not included in Column Heather Mode.Column selection valve (Valve not included) allows you to switch the solvent flow to:One of several columnsA restrictor bypass to a mass spectrometerColumn regenerationThe 2795 Separations Module firmware automatically detects the presence and type of column selection valve at power on. You can specify column selection:Using the front panelThrough the separation methodAs part of a function in the sample set methodThe 2795 Separations Module (system not included) Status screen shows the currently selected column or flow path. Column Regeneration Valve (valve not included) allows you to perform LC operations using one column while the second column is undergoing regeneration by a second solvent delivery system.Additional Prep Fees May Apply