A digital 3D rocker shaker with a blue base and a clear glass platform on top. It features a dial for speed control, a timer switch, and a digital display.

4E's USA - Digital 3D Rocker - NEW

Brand : 4E's USA

Product Code : SKU 0170A SHAKER

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4E's USA SK420 Digital 3D Rocker – New

The 4E's USA SK420 Digital 3D Rocker is a versatile laboratory mixing platform designed to provide adjustable three-dimensional motion for staining and destaining gels, blotting procedures, immunoprecipitation, cell culture workflows, and general laboratory mixing. With a 10–70 rpm speed range, adjustable 0–8° tilt angle, digital controls, and a spacious 330 × 330 mm platform, the SK420 gives researchers greater control over mixing intensity than a fixed-angle laboratory rocker.

Available brand new from American Instrument Exchange, the 4E's USA SK420 provides a modern digital mixing solution for research, biotechnology, pharmaceutical, clinical, and academic laboratories. This is new equipment and includes the applicable manufacturer warranty.

Key Features

Adjustable three-dimensional rocking and mixing motion
10–70 rpm speed range
Adjustable 0–8° tilt angle
330 × 330 mm platform with nonslip mat
Maximum platform load of 5 kg / 11 lb
Digital speed and timer controls
Timer adjustable from 0 to 99 hours, 59 minutes
Bright digital display protected by tempered glass
Overload and overspeed detection
Optional additional shelf available for increased capacity
Brand-new laboratory equipment
Manufacturer warranty included

Overview

The 4E's USA SK420 combines controlled three-dimensional motion with adjustable speed and tilt, allowing researchers to modify mixing conditions according to the requirements of different samples and laboratory protocols.

Unlike a conventional two-dimensional rocker that primarily tilts samples along a single axis, the SK420 produces a three-dimensional motion that promotes movement throughout trays, dishes, containers, and other vessels placed on the platform. The tilt angle can be adjusted from essentially flat operation up to 8°, allowing users to alter the intensity and character of the mixing action.

Digital controls provide repeatable adjustment of speed and operating time. The system displays operating parameters for convenient monitoring and incorporates overload and overspeed detection to support reliable routine operation.

Key Specifications

Specification	Details
Manufacturer	4E's USA
Model	SK420
Equipment Type	Digital 3D rocker
Motion	Three-dimensional shaking / rocking
Speed Range	10–70 rpm
Tilt Angle	Adjustable, 0–8°
Platform Size	330 × 330 mm
Maximum Load	5 kg / 11 lb with platform
Timer Range	0–99 hr 59 min
Controls	Digital
Display	Digital display with tempered glass face
Included Platform	Platform with nonslip mat
Optional Platform Accessory	Additional shelf
Unit Dimensions	452 × 407 × 225 mm
Unit Weight	9 kg
Condition	Brand New
Warranty	Manufacturer warranty

Maximum load and platform dimensions should not be interpreted as a guaranteed vessel capacity. Practical capacity depends on vessel dimensions, sample weight, platform configuration, tilt setting, load distribution, and any optional accessories being used.

Common Applications

The 4E's USA SK420 can be used for gel staining and destaining, Northern, Southern, and Western blot procedures, immunoprecipitation, membrane washing, cell culture workflows, sample incubation, reagent mixing, and other laboratory processes that benefit from gentle but continuous three-dimensional agitation.

The combination of adjustable speed and tilt is particularly useful when protocols require different levels of agitation. Users can select gentler movement for delicate samples or increase the speed and tilt angle when more vigorous mixing is appropriate.

Ideal Laboratory Types

The SK420 is well suited for molecular biology laboratories, biotechnology companies, pharmaceutical research facilities, cell biology laboratories, proteomics and genomics groups, clinical research facilities, academic laboratories, university core facilities, and industrial research or quality-control laboratories.

Its relatively compact footprint also makes it a practical general-purpose mixer for laboratories that routinely perform staining, blotting, washing, and other small-scale mixing procedures.

3D Rocking Performance & Adjustable Tilt

The SK420 operates from 10 to 70 rpm and provides an adjustable tilt angle from 0 to 8°. Rather than simply changing speed, researchers can therefore modify both the rate and geometry of sample movement.

At lower speeds and shallower angles, the rocker can provide gentle movement for applications where excessive agitation or foaming is undesirable. Increasing the tilt angle or speed produces greater sample movement for applications requiring more active mixing.

This adjustability also makes the SK420 useful in shared laboratories where a single mixer may be used for several different protocols.

Platform & Vessel Compatibility

The SK420 includes a 330 × 330 mm platform with a nonslip mat. The flat platform accommodates a variety of appropriately sized trays, dishes, containers, culture vessels, and other laboratory items without requiring dedicated flask clamps for typical rocking applications.

An optional additional shelf is also available from the manufacturer for applications where increased usable platform area is beneficial.

Actual vessel and sample capacity should always be determined from the specific application rather than from platform dimensions alone. Vessel shape and height, sample weight, load distribution, selected tilt angle, and the use of an additional shelf can all affect practical capacity and mixing performance. The total platform load should remain within the manufacturer's 5 kg maximum rating.

New Equipment from American Instrument Exchange

Unlike AIE's used and refurbished laboratory equipment, this 4E's USA SK420 Digital 3D Rocker is sold brand new.

Purchasing new 4E's USA laboratory equipment through American Instrument Exchange provides laboratories with access to current equipment while also allowing customers to source complementary used, refurbished, and new laboratory equipment through a single supplier. The SK420 includes the applicable manufacturer's warranty rather than AIE's standard 90-day refurbished-equipment warranty.

Shipping & Installation

The 4E's USA SK420 is a compact benchtop instrument measuring approximately 452 × 407 × 225 mm and weighing approximately 9 kg.

The rocker should be installed on a stable, level laboratory surface with sufficient clearance around the platform for its full range of movement. Samples should be positioned securely and loads distributed appropriately across the platform. Users should also account for the height and movement of vessels when operating the rocker with an optional additional shelf.

Because the SK420 is supplied as new equipment, customers can contact American Instrument Exchange for current availability, shipping information, and accessory options.

Related Equipment

Laboratories using the 4E's USA SK420 Digital 3D Rocker may also require laboratory shakers, incubators, centrifuges, water baths, laboratory refrigerators, laboratory freezers, and balances. American Instrument Exchange supplies both new and refurbished laboratory equipment for biotechnology, pharmaceutical, academic, clinical, and industrial laboratories.

Frequently Asked Questions

Is the 4E's USA SK420 new or refurbished?

The SK420 offered by American Instrument Exchange is brand-new equipment. It is not a used or refurbished laboratory rocker and includes the applicable manufacturer warranty.

What type of motion does the SK420 provide?

The SK420 provides three-dimensional rocking or shaking motion. This creates multidirectional sample movement suitable for staining, blotting, washing, immunoprecipitation, cell culture, and general laboratory mixing.

What is the speed range?

The SK420 operates from 10 to 70 rpm with digital speed control.

Can the tilt angle be adjusted?

Yes. The tilt angle can be adjusted from 0 to 8°, allowing users to change the intensity and character of the mixing motion according to the application.

What size is the platform?

The standard platform measures 330 × 330 mm and includes a nonslip mat.

What is the maximum load capacity?

The manufacturer specifies a maximum platform load of 5 kg, or approximately 11 lb. Actual usable capacity also depends on vessel size, sample weight, load distribution, and operating configuration.

Can an additional platform be added?

The manufacturer offers an additional shelf as an optional accessory. This can increase usable space for appropriate laboratory vessels and samples while maintaining the instrument's overall load and operating requirements.

Does the SK420 have a timer?

Yes. The digital timer can be programmed for operating periods up to 99 hours and 59 minutes, making the rocker suitable for both short mixing procedures and extended protocols.

What applications is a 3D rocker commonly used for?

Three-dimensional rockers are commonly used for gel staining and destaining, Western, Northern, and Southern blot procedures, membrane washing, immunoprecipitation, cell culture workflows, and other applications requiring controlled multidirectional agitation.

Does the SK420 include a warranty?

Yes. Because this is brand-new 4E's USA equipment, it is supplied with the applicable manufacturer warranty.

Testing Procedures for Used and Refurbished Laboratory Equipment

Ensure Accuracy, Safety, and Dependable Performance Across Applications

At American Instrument Exchange, all used and refurbished laboratory equipment undergoes a rigorous, multi-point testing protocol to ensure optimal performance, operational safety, and long-term reliability. Whether the equipment is destined for research, diagnostics, quality control, or production environments, our thorough inspection and testing process is designed to meet the highest standards of laboratory excellence.

Why Testing Used Lab Equipment Is Essential

Before any refurbished laboratory equipment is returned to service, it must be carefully tested to verify:

• Functional integrity and operational performance
• Setpoint accuracy and repeatability (where applicable)
• User interface responsiveness and control features

Proper testing reduces the risk of equipment failure, measurement inaccuracies, or user hazards—helping to ensure consistent results in clinical, academic, biotech, and industrial labs.

Our standardized lab equipment testing procedures are tailored to each equipment type, ensuring every unit meets manufacturer specifications and industry benchmarks.

Key Testing Procedures for Refurbished and Used Laboratory Equipment

1. Initial Visual Inspection

• Examine equipment housing for signs of wear, corrosion, or damage
• Check ports, power cords, and exterior components for tampering or deterioration
• Verify that internal and external parts (racks, shelves, connectors, accessories) are present and undamaged

2. Functional Startup and Operational Testing

• Power on the equipment and verify startup diagnostics
• Confirm functionality of displays, buttons, switches, and control panels
• Run basic functions to confirm proper response and behavior under standard operating conditions

3. Testing and Performance Verification

• Test internal sensors or control systems using industry-standard tools
• Perform operational tests to validate accuracy and consistency
• Verify key performance specifications such as temperature control, timing, speed, or measurement outputs, depending on equipment type

4. Mechanical and Electrical System Testing

• Evaluate motors, pumps, fans, or other moving parts for smooth operation
• Inspect and test wiring, relays, fuses, and circuit boards for safety and reliability
• Test power delivery and grounding compliance

5. Safety and Compliance Checks

• Ensure equipment is grounded and insulated to meet laboratory safety standards
• Test alarms, interlocks, emergency stops, or safety shutdown systems if applicable

6. Final Quality Assurance and Documentation

• Perform extended runtime testing
• Document operational logs, testing results, and any repairs or adjustments made
• Complete a final inspection, thorough cleaning, and packaging for delivery

Trusted Quality from American Instrument Exchange

With over 50 years of experience in laboratory equipment refurbishment, American Instrument Exchange is committed to delivering certified, lab-ready instruments backed by expert testing. Our testing protocols ensure that each piece of equipment—regardless of type—is safe, accurate, and dependable from day one.

Whether you're equipping a startup lab or expanding a high-throughput facility, you can count on our refurbished laboratory equipment to perform with precision and reliability.

Refurbishment Protocol for Used Laboratory Equipment from American Instrument Exchange

At American Instrument Exchange, every piece of used laboratory equipment we offer undergoes a multi-step refurbishment process. Whether it's an analytical balance, centrifuge, freezer, oven, or any other essential lab instrument, our goal is to restore each unit to peak performance—ensuring accuracy, safety, and long-term reliability in scientific, clinical, industrial, and academic environments.

Why Choose Refurbished Lab Equipment from American Instrument Exchange?

• Thoroughly tested for performance, precision, and safety
• Backed by a warranty
• A cost-effective alternative to new equipment
• Environmentally sustainable through equipment reuse and waste reduction
• Serviced by expert technicians with decades of laboratory equipment experience

Step-by-Step Refurbishment Protocol

Every instrument and system refurbished at American Instrument Exchange follows a detailed, industry-aligned process:

1. Initial Intake & Inspection

• Complete visual and structural inspection for cosmetic damage, wear, or corrosion
• Mechanical assessment of hinges, seals, fasteners, motors, and moving parts
• Missing components and damaged items are documented for repair or replacement

2. Cleaning and Decontamination

• Full internal and external cleaning using non-abrasive, lab-safe solutions
• Removal of biological, chemical, or particulate contamination
• Disassembly and cleaning of removable parts such as trays, shelves, and filters

3. Mechanical and Electrical Repair

• Replacement or repair of worn or broken mechanical parts
• Evaluation and servicing of control panels, sensors, switches, and displays
• Testing and repair of electrical wiring, fuses, circuit boards, and power supplies

4. Functional System Testing

• Assessment of all major functions specific to the equipment type (e.g., speed, temperature, force, weight, timing)
• Operation of control interfaces, programming menus, and digital displays
• Verification of stabilization time, responsiveness, and user input reliability

5. Testing and Performance Verification

• Testing of internal sensors, controllers, and measurement systems using certified tools
• Multi-point testing to ensure repeatability, accuracy, and performance consistency
• Confirmation of user-defined setpoints, timing sequences, or programmable cycles

6. Safety and Compliance Checks

• Testing of safety interlocks, alarms, and over-limit protection systems (as applicable)
• Electrical safety inspections, including grounding and insulation verification

7. Final Quality Assurance and Documentation

• Full operational testing under simulated lab conditions
• Completion of performance benchmarks, testing results, and repair logs
• Final cleaning and visual inspection

Trust the Experts at American Instrument Exchange

With over 50 years of experience in the laboratory equipment industry, American Instrument Exchange is a trusted leader in high-quality refurbished lab instruments. Our refurbishment protocols ensure that every piece of equipment we sell is lab-ready—offering the precision, performance, and durability your team can count on.

Whether you’re outfitting a new lab or expanding an existing operation, choose American Instrument Exchange for tested, warrantied, and cost-effective laboratory equipment.

Warranty Information

All used equipment sold by American Instrument Exchange is refurbished/reconditioned, tested to meet specifications, cleaned, and comes with a 90-day warranty from the date of shipment unless otherwise specified. New products include a warranty from the manufacturer. Your warranty is only valid if you have paid your invoice. If your invoice is over 30 days old, warranty work will not be performed until your invoice is paid in full. American Instrument Exchange is not liable for any special or consequential damages that result from the use of, or the inability to use, the materials on this site or the performance of the products,

Exceptions include international sales and items that are agreed to be sold with a lesser warranty or items that are agreed to be sold “as is.”

Should there be visible shipping damage to packaging or concealed shipping damage to item(s) supplied, buyer must communicate such damage to the delivering entity or carrier upon receipt first and to American Instrument the same day item is accepted / signed for. Failure to do so voids warranty. Customer decision to involve / procure third party or OEM service other than American Instrument or AIE assigned vendors to resolve in-warranty instrument failure or defect without first placing a service call to American Instrument voids warranty.

Return & Cancellation Policy

American Instrument Exchange will authorize the return of and issue a full refund for any equipment that is not working as represented and could not be replaced or repaired to the customer’s satisfaction by AIE or a representative of AIE during the warranty period. Returns without prior authorization and an RMA number will not be accepted.

Customers are responsible for proper packaging of the equipment and all included accessories. American Instrument will pay for insurance and shipping costs. Non-inventory items bought specifically to fill customer orders may possibly be returned, but on a case by case basis.

Customers who cancel orders after refurbishing has begun or after delivery where there are no equipment performance issues may be subject to a Restocking/Cancellation Fee of 20% or more and responsible for shipping costs for both the delivery and return.

Ongoing and Extended Support Options

American Instrument Exchange is able to provide additional repair and support services outside the warranty terms for most products that sell.

For biosafety cabinets, clean benches, chemical fume hoods, and other clean air products our team at AIE Laboratory Services can provide certifications, repairs, decontaminations, and other services for customers throughout New England, and guidance and limited technical assistance for any customers in the US and Canada for new or refurbished biosafety cabinets purchased from American Instrument Exchange.

For all other products, the repair service team at American Instrument Exchange can provide both field and depot repair evaluations. We can easily schedule and coordinate the pick-up and transportation of your malfunctioning equipment. By offering hourly rates lower than most OEM service providers and eliminating travel time for technicians, we help reduce repair costs. Furthermore, our lab depot repair service minimizes or eliminates scheduling delays. Our experienced service technicians are qualified to restore your equipment to factory specifications.

Please contact our team at info@americaninstrument.com for more details.

FAQ

Does the equipment come with a warranty?

Yes, all equipment from American Instrument Exchange comes with a warranty.
Used/reconditioned/refurbished equipment is tested to make sure it operates to the manufacturer's specifications and comes with a 90-day warranty (unless otherwise noted). New equipment comes with a warranty from the manufacturer.

How do you test and recondition the equipment?

Testing requirements vary across all the equipment categories we sell. Temperature controlled units are tested with NIST traceable probes and data loggers. Gaskets, external housing, glass, handles, controls and control screens are all thoroughly inspected for integrity and functionality.
We test all equipment using the manufacturer's parameters and specifications to confirm that the unit operates properly.

How do products ship from American Instrument Exchange?

We can ship products both nationally and internationally using a well-established network of transporters. Smaller items will ship via UPS. Larger equipment will be palletized and shipped either LTL or air-ride, depending on the specific equipment and/or delivery requirements.

Return and order cancellation policy

American Instrument Exchange will accept the return of any product that is not working as represented and could not be replaced or repaired to the customer's satisfaction during the warranty period. Customers who cancel orders after refurbishing has begun will be subject to a cancellation and restocking fee of between 20% and 40%.

Are discounts available for educational or non-profit institutions, or for bulk purchases?

Yes – call or email us today with a list of equipment you're looking for and we can potentially put together a quote that includes a discount.

How does your price matching policy work?

We strive to keep our pricing competitive and reasonable. If you find comparable items for sale at a lower price from other vendors please send us a link and or quote for the item and we'll do our best to match or beat the price.

Can I see the equipment in person before committing to a purchase?

Customers are welcome to make an appointment to view equipment in our warehouse. Given our workload we may not be able to test or clean the equipment prior to your arrival if you have not committed to an order.

1023 Western Avenue is a working warehouse, not a showroom, and customers should dress appropriately and wear closed toe shoes.

Can I ship products that I purchased elsewhere to American Instrument for repair?

Yes – please see our repair services page for more information.