The US Army Corps of Engineers, Engineer Research and Development Center (ERDC) intends to negotiate on a sole source basis (IAW FAR 13.106–1(b)) with Percival Scientific Incorporated, 505 Research Drive, Perry, Iowa 50220–8140 for four (4) plant growth chambers. ERDC currently has the percival growth chambers and needs to have the same brand so that there is a continuity between the various chambers so that all of the samples are under the same conditions. Different manufacturers etc. instruments do not always operate under the same conditions.The minimum needs for the plant growth chambers are as follows:- Percival model E–36VL (QTY of 4)o Temperature Range of 7–44 ± 0.5 oC (with temperature safety limit controls)o Interior Space volume of 29.7 ft3o Total Shelving Floor Area 27 ft2o Maximum Growing Height 9.5ino Exterior Dim
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