The Roche Cobas C502 Chemistry Analyzer, provided by Roche Diagnostics
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Refurbished Roche cobas c502 Chemistry Analyzer
The mid-volume chemistry module of the Roche cobas 8000, rebuilt Down-To-Frame® to original specification. You save up to 70% compared with buying new, and you can finance with $0 down.
The Roche cobas c502 module runs up to 600 photometric tests an hour on a cobas 8000, with 60 reagent channels and reagent cassettes you load while it runs. Buy it refurbished from Diamond and lower your capital budget expenditures this year.
check_circleSave up to 70% compared with a new cobas c 502 module, whether you're building a cobas 8000 or adding capacity to one.
check_circleKeep 60 reagent channels on board for specialty chemistry, specific proteins, drugs and whole-blood HbA1c.
check_circleLoad and unload reagent cassettes mid-run, so a reagent running low doesn't stop the line.
check_circleFinance up to $2 million with $0 down, and roll shipping into the payments.
check_circleEvery module is rebuilt Down-To-Frame® by an FDA-registered, ISO 13485:2016 certified refurbisher, then validated with multi-level QC.
check_circleOur engineers install it on your cobas 8000, verify your assays and service it afterward.
How the cobas c502 module works on a cobas 8000
The c502 is the mid-volume photometric module of the cobas 8000. The core unit sends it racks, it runs the tests ordered for each sample, and it returns the racks to the core unit for the next module or the unload tray.
The specialty module next to your high-volume chemistry
biotechWhole-blood HbA1c. Roche lists whole blood as a sample type for the c502 but not for the c701 or c702. Labs that run high-volume c701 or c702 modules add a c502 to bring HbA1c onto the same line.
scienceA home for lower-volume tests. Putting specific proteins, drugs and esoteric tests on the c502 keeps reagent space on the high-volume modules for the routine chemistry that fills them.
local_hospitalMethods carried over from the cobas 6000. Roche's FDA filing describes the c502 as analytically identical to the cobas c501, without the integrated ISE. Results line up with the c501 a lab may be replacing.
Sample flow
biotechIts own module sample buffer. Each c502 holds racks in a buffer and pulls samples in random order, so it never waits on another module to finish.
biotechAbout 7 µL per test on average. Low sample use leaves more volume for reruns and add-on orders.
speedElectrolytes on the ISE module. The c502 has no ISE unit. Sodium, potassium and chloride run on a cobas ISE module, at 900 tests an hour on the Core ISE build or 1,800 on the Core Dual ISE.
Reagents and result integrity
science60 reagent channels, loaded mid-run. Add or remove reagent cassettes during operation without pausing the module.
check_circleAutomated cassette management. The module registers, moves, places and disposes of cassettes itself.
biotechSerum indices, clot and liquid level detection. Lipemia, hemolysis and icterus are checked on each sample, and clots are caught before they produce a result.
check_circleUltrasonic mixing and automatic rerun. No stirrer carryover, and out-of-range results rerun and dilute without a tech pulling the tube.
The cobas c502 test menu
The c502 runs the cobas c photometric menu, with up to 60 assays on board at once. Labs typically load it with:
check_circleDiabetes testing. Whole-blood HbA1c, plus fructosamine and glucose.
check_circleSpecific proteins. Immunoglobulins, complement, ferritin, transferrin, haptoglobin, cystatin C, light chains and lipoprotein(a).
check_circleTherapeutic drug monitoring. Vancomycin, gentamicin, digoxin, phenytoin, carbamazepine, valproic acid and lithium.
check_circleDrugs of abuse. Amphetamines, benzodiazepines, cannabinoids, cocaine, opiates, methadone and ethanol.
check_circleRoutine chemistry overflow. Liver enzymes, lipids, renal markers and cardiac enzymes when the high-volume modules need relief.
Electrolytes run on the cobas 8000 ISE module, not the c502. Send your menu with your quote request and we'll confirm what runs on the module you're buying.
cobas 8000 configurations with the c502
A cobas 8000 pairs one core unit with up to four analytical modules, plus an optional ISE module. Common builds with the c502:
local_hospitalISE + c502 + immunoassay. A mid-volume lab consolidates chemistry, electrolytes and immunoassays on one line, with an e 602 or e 801 module beside the c502.
check_circleISE + c701 or c702 + c502. The high-volume module carries routine chemistry, and the c502 carries HbA1c, specific proteins and drugs.
speedTwo c502 modules. Up to 1,200 photometric tests an hour, with a second module to keep chemistry running during maintenance.
Planning your site for a cobas c502
handymanFloor space. The c502 with its sample buffer measures 150 x 114 x 130 cm (59 x 45 x 51 in, W x D x H). Add it to the length of the line, plus service clearance.
engineeringFloor load. It weighs 535 kg (1,180 lb). Check floor ratings along the delivery path and at the install spot.
electrical_servicesPower. 200, 208, 220 or 230 V AC at 50 or 60 Hz, rated 2.5 kVA, with an actual maximum draw of 1.7 kVA.
thermostatHeat. Rated at 9,000 kJ an hour, with an actual maximum of 6,120 kJ an hour. Share this with facilities so the room's HVAC can carry it.
water_dropWater and drain. The module draws on the system's deionized water supply and drain. Send us your water system details and we'll confirm capacity.
Dimensions (W x D x H)150 x 114 x 130 cm (59 x 45 x 51 in)
Weight535 kg (1,180 lb)
Power200/208/220/230 V AC, 50/60 Hz; 2.5 kVA rated, 1.7 kVA actual maximum
Heat output9,000 kJ/hour rated, 6,120 kJ/hour actual maximum
Water and drainFrom the cobas 8000 system supply; confirm flow rate
Who buys a refurbished Roche cobas c502
check_circleLabs already running a cobas 8000. Adding a refurbished c502 moves HbA1c, proteins and drugs off the high-volume modules, or adds capacity, without paying new-module prices.
check_circleMid-volume hospitals building their first cobas 8000. A core unit, ISE module and c502 give cobas 8000 chemistry at a volume a c701 or c702 would oversize, with room to add modules later.
speedLabs replacing a cobas 6000. The c502 runs the same photometric chemistry as the c501, on a platform that also takes Roche's higher-throughput modules.
check_circleLabs that need a backup module. A second chemistry module keeps the menu running while the primary module is down for maintenance or repair.
What a refurbished cobas c502 costs
A refurbished cobas c502 from Diamond costs up to 70% less than a new module. Your cost depends on..
check_circleModule or full system. A c502 added to your existing cobas 8000, or a full system with core unit and ISE module.
check_circleBuild year and software. The module's age and the cobas 8000 software version it needs to match your line.
check_circleIntegration work. Connecting the module to your core unit, plus assay verification and training.
handymanService coverage. The plan you pick, from Platinum to per-visit.
swap_horizTrade-in credit. The value of the analyzer or module you're retiring.
Financing a c502
Finance or lease up to $2 million, with application-only approval up to $400,000.
Start at $0 down with a low introductory payment.
Get a fast credit decision and terms that fit your capital cycle.
Roll shipping and other costs into the same payments.
Send your current cobas 8000 configuration and volume for a quote.
cobas c502, c501, c701 or c702?
check_circleChoose the cobas c502 if you're building or expanding a cobas 8000 and need 600 tests an hour, whole-blood HbA1c or a home for specialty tests.
check_circleChoose the cobas c501 if you want the same photometric chemistry with electrolytes built in, on the smaller cobas 6000 platform.
check_circleChoose the cobas c701 if routine chemistry volume calls for up to 2,000 tests an hour from one module.
check_circleChoose the cobas c702 if you want 2,000 tests an hour plus automatic reagent decapping and loading during operation.
Why invest in a refurbished cobas c502 from Diamond?
A rebuilt module that fits your line
A used c502 sold as-is may carry an old software version, a worn cassette handler or a buffer that misroutes racks, and you find out when it's already bolted to your core unit. Diamond rebuilds every c502 to the frame, replaces wear parts with new probes, syringes, seals, tubing and reagent lines, and validates it with multi-level QC before it's crated. Diamond is FDA registered and ISO 9001:2015 and ISO 13485:2016 certified in the US and the EU.
Installed on your cobas 8000 and supported afterward
Our engineers connect the c502 to your core unit, verify your assays and train your staff.
Every module is eligible for our field service plans, from Platinum with next-day response to per-visit support.
Preventive maintenance plans keep it on its recommended schedule at a fixed cost.
Trade in what it replaces
We will likely take your old analyzer or module in trade, handle the deinstall and decontamination, and apply its value to your purchase.
Roche cobas c502 FAQ
Q: What is the throughput of the cobas c 502 module?A: Up to 600 photometric tests an hour.
Q: How many reagent channels does the cobas c502 have?A: 60, and you can load and unload cassettes while the module runs.
Q: Does the cobas c502 run electrolytes?A: No. On a cobas 8000, sodium, potassium and chloride run on the separate ISE module.
Q: Is the cobas c502 the same as the c501?A: Roche describes the c502 as analytically identical to the cobas c501, minus the integrated ISE. The c502 runs on the cobas 8000, and the c501 runs on the cobas 6000.
Q: Can the cobas c502 run HbA1c from whole blood?A: Yes. On a cobas 8000, the c502 is the chemistry module that accepts whole blood for HbA1c.
Q: Can I add a refurbished c502 to my existing cobas 8000?A: Yes. Tell us your configuration and software version, and our engineers will install and integrate the module on your line.


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76 Total Assays Tested
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| Manufacturer: | Roche Diagnostics (Hoffmann) |
| Series: | Cobas 8000 |
| CLIA Complexity: | Moderate |
| Sample Types: | CSF, Plasma, Urine, Whole Blood, Serum, Hemolysate |
| Number of Assays: | 76 |
| Maximum Throughput: | 600 tests/hour |
| Sample Cycle Time: | 2 (sec) |
| Sample Size Min: | 1.5 μL |
| Direct Sample (STAT): | Yes |
| Auto Sample Handling: | Yes |
| Sample Input Type: | Sample Cup Sample Tube |
| Reagent Type: | Liquid |
| Reagent System: | Closed |
| Reagent Capacity: | 60 |
| On-Board Refrigeration: | Yes |
| Configuration: | Floor Model |
| Height: | 130 cm (51 in) |
| Width: | 150 cm (59 in) |
| Depth: | 114 cm (45 in) |
| Weight: | 535 kg (1177 lb) |
| Water Requirement: | Yes |
| Water OnBoard Supply: | No |
| Water Consumption: | 40 (L/hour) |
| Power Supply: | 220V |
| Point Of Care: | No |
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For the laboratory looking to manage manufacture recommended preventative maintenance (PM) schedules for instrumentation at a fixed cost. The PM Service Plan will increase the reliability and reduce the risk and costs of unplanned maintenance and equipment downtime. Our plans are scheduled and planned around your specific instrument and operational needs.

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