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| Name of instrument/First year sold/Where designed | ChemWell/1998/U.S. |
| Country where manufactured/Where reagents manufactured | U.S./open system |
| No. of units in clinical use in U.S./Outside U.S. | 50+/3,000+ |
| Operational type/Model type/Sample handling system | batch, random access/benchtop/rack |
| Dimensions in inches (H × W × D)/Instrument footprint in sq. feet | 16 × 34 × 20/4 |
| Tests available on instrument in U.S. | unlimited—open system |
| Tests not available in U.S. but submitted for clearance | — |
| Tests not available in U.S. but available in other countries | unlimited—open system |
| Tests in development | — |
| Tests not available on other manufacturers’ analyzers | — |
| Fully automated microplate system | yes |
| Number of each analyte performed in separate disposable unit | up to 12 |
| Number of wells in microplate | minimum strip, 8; maximum full plate, 96 |
| Methods supported/Separation methods | EIA/coated microwell |
| Number of different measured assays onboard simultaneously | up to 12 |
| Number of different assays programmed, calibrated at once | unlimited |
| Number of user-definable (open) channels | unlimited |
| Number of different analytes for which system accommodates reagent containers onboard at once/Tests per container set | 27/assay dependent |
| Shortest/Median onboard reagent stability/Refrigerated onboard | assay dependent/assay dependent/yes (10°C below ambient) |
| Multiple reagent configurations supported | yes |
| Reagent container placed directly on system for use | yes |
| Reagents bar coded/Information in bar code | no/— |
| Same capabilities when 3rd-party reagents used/Susceptibility to carryover | no/0 |
| Walkaway capacity in minutes/Specimens/Tests-assays | assay dependent/92/12 |
| System is open (home-brew methods can be used)/Liquid or dry system | yes/liquid |
| Uses disposable cuvettes/Maximum number stored | yes/96 |
| Uses washable cuvettes/Replacement frequency | yes/assay dependent |
| Minimum specimen volume required | 2 µL |
| Minimum sample vol. aspirated precisely at once/Minimum dead volume | 2 µL/— |
| Supplied with UPS (backup power)/Requires floor drain | no/no |
| Requires dedicated water system/Water consumption | no/— |
| Noise generated | — |
| Has dedicated pediatric sample cup/Dead volume | no/— |
| Primary tube sampling/Tube sizes/Pierces caps on primary tubes | yes/12 × 100 mm/no |
| Sample bar-code reading capability/Autodiscrimination | no/— |
| Bar-code placement per CLSI standard Auto2A | — |
| Onboard test auto inventory (determines volume in container) | yes |
| Measures No. of tests remaining/Short sample detection | no/no |
| Auto detection of adequate reagent or specimen | yes |
| Clot detection/Reflex testing capability | no/yes |
| Hemolysis detection-quantitation/Turbidity detection-quantitation | no/no |
| Dilution of patient samples onboard/Automatic rerun capability | yes/no |
| Sample volume can be increased to rerun out-of-linear range high results/ Increased to rerun out-of-linear range low results | yes/yes |
| Time between initial result and reaspiration of sample for rerun | assay dependent |
| Autocalibration or autocalibration alert | no |
| Number of calibrators required for each analyte | assay dependent |
| Calibrants can be stored onboard/Average calibration frequency | yes/assay dependent |
| Multipoint calib. supported/Multiple calibs. stored for same assay | yes/yes |
| How often QC required | shortest interval: each run; longest: daily |
| Onboard real-time QC/Support multiple QC lot Nos. per analyte | yes/yes |
| Automatic shutdown/Startup is programmable/Startup time | yes/yes/2 minutes |
| Stat time to completion of β-hCG test | assay dependent |
| Time delay from ordering stat test to aspiration of sample | 30 seconds |
| Throughput per hour for three analytes on each specimen, in No. of specimens/No. of tests (cycle time) | assay dependent/— |
| Can auto transfer QC results to LIS/Onboard capability to review QC | yes/yes |
| Data-management capability/Instrument vendor supplies LIS interface | onboard/yes (included) |
| LIS interfaces up and running in active user sites | — |
| LIS interface operates simultaneously w/running assays | no |
| Bidirectional interface capability | yes (broadcast download and host query) |
| Interface available (or will be) to auto specimen handling system | no |
| Modem servicing/Can diagnose own malfunctions/ Determine malfunctioning component | yes/yes/yes |
| Can order (via modem) malfunctioning part(s) w/o operator | no |
| On-site response time of service engineer | within 48 hours |
| Mean time between failures/To repair failures | — |
| Avg. time to complete maintenance by lab personnel | daily: <10 minutes; weekly: <10 minutes; monthly: <10 minutes |
| Onboard maintenance records/Maintenance training demo module | no/no |
| List price/Targeted bed size or daily volume | $25,000/up to 500 tests per day |
| Annual service contract cost (24 hours/7 days) | $4,000 |
| Training provided w/purchase/Advanced operator training | 3 days on site/no |
| Distinguishing features (supplied by vendor) | ability to perform general biochemistries; optional reagent cooling module |
| Tabulation does not represent an endorsement by the College of American Pathologists. |
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