Wescor - Model 4420

Manufactured by  Wescor
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Colloid Osmometer

Wescor's Colloid Osmometer combines simplicity, reliability and precision in the vital measurement of colloid osmotic pressure (COP) in hospital critical care and surgical centers. Developed with a singular purpose: to provide the physician with a patient's COP status before administering albumin or synthetic colloids and as a precise monitor of this therapy. With many advanced features, Wescor's Colloid Osmometer stands apart as the superior instrument for measuring COP.
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Documents & Manuals

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General Specifications
Depth 28 cm
Sample Volume125 to 350 μL
Height14 cm
Width 18 cm
Power Requirements 100 V, 115 V, or 220/240 V, (user-selectable), 50 to 60 Hz.
Peak Power5 W
Weight3.2 kg
Additional Specifications

 Sample Loading: Direct syringe injection, flow through system.  
Standard Membranes: Selectively impermeable to proteins exceeding 30,000 or 10,000 molecular weight. Wet-packed and premounted for easy, self-indexing replacement. (Wescor Cat. No. SS-030 for 30,000 MW; SS-050 for 10,000 MW).  
Membrane Life: More than 1000 samples in routine applications if kept wet.  
Response Time: 3 to 7 minutes, depending on membrane condition.  
Clinical Range: 0 to 35 mmHg; 0 to 47.6 cm h2O; 0 to 4.67 kPa.  
Precision: ± 0.3 mmHg with proper membrane function.  
Calibration: Osmocoll N (Normal Level) Calibrator.  
Readout: 64-character alphanumeric liquid crystal display (LCD).  
Electronics: Solid state, microprocessor controlled.

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