Description
LKB 2211 SuperRac | Automated Laboratory Fraction Collector
Product Introduction
The Pharmacia LKB 2211 SuperRac is a legacy automated fraction collector used in chromatography laboratories to collect liquid effluent into separate vessels. Its role is downstream of the chromatographic separation: rather than performing the separation itself, it organizes the output into timed or otherwise configured fractions for analysis, storage, or further processing.
The LKB 2211 SuperRac is documented for integration with Dionex Chromeleon chromatography management systems. That arrangement uses the instrument’s external input/output connector and relay-based control, with the fraction collector initialized for the required rack type, fraction settings, and collection count. This makes the 2211 a practical legacy-laboratory replacement candidate, provided the instrument, rack configuration, and control interface match the existing installation.
LKB 2211
Key Technical Specifications
- Model Designation: LKB 2211 SuperRac
- Catalog Number: 2211-010, as reported in reseller records
- Equipment Category: Laboratory fraction collector
- Primary Use: HPLC/liquid chromatography fraction collection
- Collection Method: Sequential collection into vessels or tubes
- Rack Selection: Instrument initialization supports rack types A through E, according to Chromeleon integration documentation
- Fraction Control: Time-based control is documented for Chromeleon operation
- Fraction Count: Configurable during instrument initialization
- External Control: Supported through an appropriate interface and relay arrangement
- External Connector: 25-pin Sub-D connector identified as “Ext. Input-Output” in Chromeleon documentation
- Computer Integration: Documented with Dionex Chromeleon chromatography management system
- Relay Requirement for Documented Chromeleon Setup: Six free relay channels
- Power Configuration: 90–240 VAC reported in a reseller record; confirm the actual unit’s nameplate and selector
- Fuse Ratings: Reseller record references 250 mA for 90–120 V operation; verify the installed fuse and OEM requirements
- Physical Dimensions/Weight: Not verified from the reviewed documentation
- Collection Capacity: Depends on the installed rack and vessel configuration; verify the supplied rack
- Included Accessories: Not established; confirm rack, cable, and manual availability with the seller
Specification note: The LKB 2211 is a legacy laboratory instrument. Confirm electrical configuration, rack compatibility, and interface requirements from the unit’s nameplate and applicable manual before commissioning.
Global Sourcing & Live-Test SOP
For a used or surplus LKB 2211 SuperRac, acceptance should establish more than basic power-up. The collection mechanism, rack indexing, instrument settings, and external control interface all affect suitability for laboratory use.
5.1 Inbound Verification
- Photograph the complete model label and serial number.
- Confirm the instrument is an LKB 2211 SuperRac.
- Record catalog number and any visible revision or configuration markings.
- Verify the nameplate voltage and selector position before applying power.
- Inspect the housing, collection mechanism, drive assembly, and rack support.
- Check for corrosion, liquid ingress, chemical residue, or mechanical damage.
- Confirm whether a collection rack, vessels, power cord, external cable, or manual is included.
- Record the seller’s condition description and any available service history.
5.2 Power-Up and Mechanical Checks
- Verify the input voltage against the actual nameplate.
- Inspect the power cord, fuse holder, and connector before energizing.
- Power the unit using an appropriate protected supply.
- Confirm startup behavior and front-panel control response.
- Check the collection arm or positioning mechanism for smooth travel.
- Inspect rack seating and alignment.
- Confirm that the mechanism does not bind, stall, or make abnormal noise.
- Record any display, control, or movement faults.
5.3 Fraction Collection Simulation
- Install the appropriate rack and collection vessels.
- Initialize the collector using the correct rack type.
- Configure a controlled fractionation sequence.
- Verify that the mechanism indexes to the expected collection positions.
- Confirm repeatable movement and correct vessel alignment.
- Check the fraction count and timing behavior.
- Perform a water-based collection test where appropriate.
- Inspect for spills, drips, or misdirected liquid.
5.4 External Control and Chromeleon Integration
If the unit is intended for Chromeleon or another external control system:
- Confirm the external interface and cable pinout against the applicable documentation.
- Identify the required relay channels and verify their availability.
- Confirm the instrument’s initialization settings before connecting external control.
- Test the interface using the documented configuration.
- Verify start, stop, and fraction-advance behavior as applicable to the installation.
- Record the software version, interface hardware, and connection cable used.
Do not assume that a generic 25-pin cable will provide correct control. Use a verified cable and the relevant wiring documentation.
5.5 Final Preparation
- Record the tested rack type and fractionation settings.
- Document the power configuration and fuse installed.
- Photograph the unit and any included accessories.
- Protect the collection mechanism and rack support during shipment.
- Use suitable cushioning and moisture protection.
- Clearly distinguish tested functions from functions not evaluated.
Field Engineer’s Pitfall Guide
❗ Rack configuration affects collection performance
The collector must be initialized for the installed rack type and vessel arrangement. A unit that powers up but is configured for a different rack may not collect fractions at the intended positions.
❗ External control requires the correct cable and relay mapping
Chromeleon documentation describes a specific external-control arrangement involving the 25-pin Sub-D connector and six relay channels. Do not assume that the connector alone guarantees compatibility with a modern chromatography data system.
❗ Verify the actual mains configuration before energizing
Reseller records report selectable 90–240 VAC configurations, but the actual unit’s nameplate and voltage selector take precedence. Inspect the fuse and electrical markings before applying power, especially when sourcing internationally.
Intent-Driven FAQ
What is the LKB 2211 SuperRac?
It is an automated laboratory fraction collector used in chromatography to collect liquid effluent into sequential vessels.
Is the LKB 2211 SuperRac an HPLC pump or detector?
No. It is a fraction collector, typically used downstream of the chromatography column and detector to collect selected portions of the liquid output.
Can the LKB 2211 SuperRac work with Chromeleon?
Yes. Integration with Dionex Chromeleon is documented. The setup requires the appropriate external connection cable, relay channels, and instrument initialization. Verify the specific software and hardware configuration before purchase.
What power supply does the LKB 2211 require?
A reseller record reports selectable 90–240 VAC. Confirm the exact voltage configuration, selector position, and fuse requirements from the unit’s nameplate before energizing.
Does the unit include a collection rack?
Not necessarily. Rack inclusion depends on the seller’s offering. Request photos of the actual rack and verify its compatibility with the intended collection vessels.
Is the LKB 2211 SuperRac obsolete?
It is a legacy laboratory instrument. Used and refurbished units appear in surplus channels, but current OEM production and support status should be confirmed directly with the manufacturer or an authorized service channel.
What should I verify before buying a used LKB 2211?
Confirm the model and catalog number, mains configuration, rack inclusion, mechanical indexing, fractionation operation, external interface condition, and documented test status. For computer-controlled use, verify the required cable and relay arrangement before treating the unit as ready for integration.
Bottom Line for Buyers
The Pharmacia LKB 2211 SuperRac is a legacy chromatography fraction collector intended for automated sample fraction collection. Its value as a replacement depends on the supplied rack, working collection mechanism, electrical configuration, and any required external-control interface.
For procurement, request clear nameplate and rack photos, verify power requirements, and ask for a documented indexing or collection test. If the unit will be integrated with Chromeleon, confirm the exact relay and cable arrangement before purchase.
