Surge Scientific · SK308 · LED Digital Rocking Shaker
LED Digital Rocking Shaker — 9° See-Saw · 10–70 RPM · 10 kg · SK308-2-10 Platform Included
2D See-Saw Rocking Motion · Western Blotting · Gel Staining & Destaining · Cell Culture Bag Mixing · Antibody Incubation · Incubator & Cold Room Compatible
See-saw rocking is the workhorse motion of the molecular biology bench — the steady, bilateral tilt that moves reagent uniformly from one end of a blotting tray to the other, keeps staining baths in constant motion, and aerates single-use cell culture bags through their headspace. The SK308 delivers precisely that: a fixed 9° tilt, 10–70 RPM speed range, 10 kg load capacity, dual LED displays for speed and time, and a 99-hour timer that turns overnight incubations into alarm-confirmed, unattended runs.
Why 2D See-Saw Rocking Is the Right Motion for Blotting and Culture
Not every laboratory application benefits from three-dimensional motion. Western blotting, gel staining, and antibody incubations work best with a single-axis, rhythmic tilt — the even, end-to-end sweep that carries reagent across a flat tray surface at a consistent rate, drains it to one end, then brings it back. Three-dimensional nutating motion introduces a rotational component that can generate localised pooling in flat-bottomed trays and make it harder to control the washing kinetics that determine signal-to-noise in sensitive immunoblots.
The SK308's fixed 9° see-saw rocking provides the predictable, reproducible tilt that blotting protocols are written around. The angle is large enough to keep reagent moving continuously across the membrane surface — eliminating the stagnant zones that uneven staining — and controlled enough to prevent splashing in open gel trays at any speed in the range. Dual LED displays show speed and time on independent readouts simultaneously. The dual-dial interface requires no menu navigation. And with a 10 kg rated platform and IP21 protection, the SK308 handles full blotting cassettes, large gel apparatus, and multi-bag cell culture setups without compromise.
Choosing the Right Rocking Motion
2D See-Saw Rocking — SK308
Single-axis bilateral tilt at a fixed 9° angle. Even end-to-end reagent sweep ideal for Western blot washing, gel staining, antibody incubations, and cell culture bag aeration. Predictable washing kinetics — protocols are written for this motion.
3D Nutating Motion — SK308 3D
Corner-tipping undulating wave through all four axes. Preferred for hybridization incubations, immunoprecipitation, and applications where full 360° surface coverage matters more than controlled unidirectional flow.
9° Fixed Tilt — Consistent Reagent Coverage
The 9° angle is calibrated for the full range of blotting and staining applications — enough tilt to drive reagent end-to-end continuously, controlled enough to prevent splashing in open gel trays and foaming in cell culture bags. The fixed angle eliminates the variable that causes run-to-run inconsistency in protocols where washing kinetics determine result quality.
Dual Independent LED Displays — Speed & Time Simultaneously
Two separate LED displays show running speed and elapsed or remaining timer time at the same time — no toggling between readouts, no estimating. Each parameter has its own dedicated dial control, so speed and timer adjustments are independent and immediate. The display is readable across the bench without approaching the instrument.
10 kg Load — Full Protocol Throughput
Rated to 10 kg with the SK308-2-10 dish platform fitted, the SK308 supports a full Western blot cassette stack, multiple gel staining trays loaded simultaneously, or a large single-use cell culture bag without load-induced speed variation. Overload and overspeed detection monitors motor state continuously and shuts down safely before damage occurs.
Incubator & Cold Room Compatible — Temperature Control
Compact footprint and universal voltage allow the SK308 to operate inside standard laboratory incubators and cold rooms. Primary and secondary antibody incubations run at 4°C in a cold room without a dedicated refrigerated rocker. Hybridization protocols run at 42°C or 65°C inside a hybridization oven without manual sample transfer.
Overnight blot incubation — set the timer, walk away, return to the alarm. The SK308's 99-hour timer with automatic alarm covers every protocol from a 20-minute gel destain to a 16-hour primary antibody overnight incubation. The alarm fires at completion — no over-incubation, no signal loss from antibody left on the membrane past the intended endpoint.
Key Features
- 2D see-saw rocking motion — single-axis bilateral tilt
- Fixed tilt angle: 9°
- Speed range: 10–70 RPM — continuously adjustable
- Maximum load capacity: 10 kg (with platform)
- Included platform: SK308-2-10 dish platform — 317 × 317 mm
- Anti-slip rubber mat holds vessels securely at all speeds
- 6 × fixing strings included with platform
- Timer range: 0–99 hours 59 minutes / continuous
- Automatic alarm at timer completion — unsupervised operation
- Dual independent LED displays — speed and time simultaneously
- Dual dedicated dial controls — one per parameter
- Real-time running speed confirmed on display
- LED display under tempered glass — condensation resistant
- Microcomputer digital speed control — stable, splash-free rocking
- Brushless DC motor — maintenance-free, long service life
- Overload detection and protection — automatic shutdown
- Overspeed detection and protection
- Incubator compatible — standard laboratory incubator
- Cold room compatible
- Wide choice of optional platforms for all labware formats
- Universal voltage: AC 100–240 V, 50/60 Hz
- 2-year all-inclusive manufacturer's warranty
9°
Tilt Angle
Fixed see-saw angle — consistent wash kinetics across every run, every blot
10 kg
Max Load
Full blot cassette stack or large culture bag — no speed drop under load
99 h
Max Timer
From a 20-minute gel destain to a multi-day hybridisation protocol
Ideal Applications
Western Blotting & Immunoassay
Blocking solution incubation, primary and secondary antibody application, and TBST/PBS washing steps on PVDF and nitrocellulose membranes. The consistent 9° see-saw tilt delivers uniform wash coverage that removes background without stripping signal — the reproducible kinetics that make overnight antibody incubations reliable run to run.
Gel Staining, Destaining & Blotting
Coomassie and silver gel staining, ethidium bromide destaining, and Southern, Northern, and dot blot hybridisation protocols. The end-to-end see-saw motion keeps staining baths uniformly distributed across gel surfaces and maintains probe contact across membrane surfaces during hybridization incubations.
Cell Culture & Bioprocessing
Single-use wave culture bag mixing with the gas-headspace aeration the 2D rocker delivers best. The bilateral tilt drives liquid across the bag floor and allows headspace gas exchange through the rocking cycle — optimal for mammalian cell and viral vector production in small-scale bioreactor bags.
What's in the Box
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | SK308 |
| Shaking Motion | 2D see-saw rocking — single-axis bilateral tilt |
| Tilt Angle | 9° (fixed) |
| Speed Range | 10–70 RPM |
| Maximum Load Capacity | 10 kg (with platform) |
| Included Platform | SK308-2-10 dish platform — 317 × 317 mm |
| Platform Accessories | Anti-slip rubber mat + 6 × fixing strings (included) |
| Timer Range | 0–99 hours 59 minutes / Continuous |
| Timer Alarm | Automatic alarm at run completion |
| Display | Dual independent LED displays — speed and time simultaneously |
| Controls | Dual dedicated dial controls — one per parameter |
| Display Protection | Tempered glass front panel |
| Speed Control | Digital microcomputer — real-time speed display |
| Motor Type | Brushless DC — maintenance-free |
| Safety Devices | Overload detection · Overspeed detection · Automatic shutdown |
| Incubator Compatible | Yes — standard laboratory incubator and cold room |
| Input Power | AC 100–240 V, 50/60 Hz |
| Power Consumption | 35 W |
| Permissible Ambient Temp. | 5–40°C |
| Permissible Humidity | ≤80% RH |
| Protection Class | IP21 (DIN EN 60529) |
| Dimensions (W × D × H) | 452 × 407 × 220 mm |
| Weight | 12 kg |
| Certifications | CE |
| Warranty | 2-year all-inclusive manufacturer's warranty |
Surge Scientific Warranty & Support
This instrument is sold through Surge Scientific, your trusted laboratory equipment partner. Our product specialists are available Monday–Friday for assistance. SK308 is backed by a 2-year all-inclusive manufacturer's warranty. Contact us at info@surgescientific.com or reach out directly to our support team at 855.943.3344 for pre-sales questions, quotes, and technical assistance.