Model	Test Environment - instrument performs only optical aggregation measurements*	Samples	Analog Output	Digital Output	Software Included	Optiplex All-in-One Computer Included
490 4+	PRP, WP, GFP	4	Yes	Yes	Yes	See Accessories
490 +4	PRP, WP, GFP	4	Yes	Yes	Yes	See Accessories
490 4+4	PRP, WP, GFP	8	Yes	Yes	Yes	See Accessories

Series 700 Whole Blood/Optical Lumi-Aggregometers

Model	Test Environment*	Samples	Whole Blood / PRP Aggregation	Luminescence: ATP or Superoxides	Software Included	Optiplex All-in-One Computer Included
700-2	WB, PRP, WP, GFP	2	2	2	Yes	No
700-4	WB, PRP, WP, GFP	4	4	4	Yes	No
700-2DR	WB, PRP, WP, GFP	2	2	2	Yes	Yes
700-4DR	WB, PRP, WP, GFP	4	4	4	Yes	Yes

* WB = whole blood; PRP = platelet-rich-plasma; WP = washed platelets; GFP = gel-filtered platelets