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SKU: SK-838 Gyromax Compact Lab Shaker Model # SK-838

Gyromax Compact Lab Shaker Model # SK-838

Gyromax Compact Lab Shaker Model # SK-838

SKU: SK-838

Vendor: Amerex Instruments
Shipping Weight: 42.00 pounds
Part Number: amerex-instruments-SK-838
Purchase Gyromax Compact Lab Shaker Model # SK-838

The 800 series of open-air shakers shakers offer a choice of three shakers with five platform sizes. The largest model, 818, is a large-capacity heavy-duty with a 38" x 24" platform. Both the mid-size 828 and the smallest 838 offer a choice of two platform sizes. The SK-838 is a compact unit, yet is large enough to carry a significant load.

The shakers feature microprocessor control and digital RPM and timer readouts. The microprocessor regulates the speed to within 1 RPM of setpoint. The acceleration circuitry provides for a smooth ramp-up of speed to minimize splashing. The drive system features a triple-eccentric drive that is dynamically balanced with counter weights. This feature eliminates the need to make adjustments as the load increases, and together with a low-profile design, ensures a smooth, stable and quiet operation. A fan cools the drive motor to ensure a long life.

A timer can be set to 99 hours and 59 minutes or to 9999 minutes in increments of one minute. If the timer is not needed, it can be easily disabled and the shaker set to run continuously. In case of power failure, the timer will count from where it last stopped after it resumes running.

Accessories include platforms, clamps, tube racks with a universal holder, and stainless steel spring racks for flasks or tubes of different sizes.

*GYROMAX is a trademark of Amerex Instruments, Inc.

  • Maintenance-free brushless motor cooled by a fan for long life.
  • Dynamically balanced, triple-eccentric drive for long life and smooth, stable, and quiet operation. Eliminates need for adjustments as the speed changes.
  • Shaking speed: 40 to 400 RPM (slightly lower at 50 Hz).
  • Digital RPM setting and display in 1 RPM increments.
  • In case of power failure, the timer will count from where it last stopped when the shaker resumes running.
  • Timer setting and display: 99 hours 59 minutes or 9999 minutes in 1 minute increments, or continuous. Timer can count up or down.
    Overall dimensions
    Model 838 Regular:
    15.7"W x 11.8"D (400mmW x 300mmD)
    Model 838 Oversize:
    18.9"W x 15.0"D (480mmW x 380mmD)


    Flask Size (mL)
    Model 838
    Model 838 (Oversize)

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All returns must be authorized by Spectra Services in order to insure proper credit and must be requested within 30 days of purchase. All returns are subject to a minimum 15% restocking charge. For returns not due to error on behalf of Spectra Services, the customer is responsible for all transportation fees related to the returned product. To ensure proper credit, each product return must include the following information:

  • Customer name and address
  • Purchase order number
  • Spectra Services shipping order number
  • Date of invoice
  • Item number of returned item(s)
  • Spectra Services return authorization number (RMA)
  • Reason for return

Non-Returnable Goods
Unfortunately, Spectra Services is unable to accept the following returns at this time:

  • Products not in completely resalable condition (including products with damaged, missing, or defaced labeling or packaging
  • Chemicals, reagents, diagnostics, sterile, or any controlled products (unless products do not meet specification
  • Labroatory apparatus or instruments that have been used or are without the original packaging, labeling and operating manuals
  • Refrigerated products or other perishables
  • Products which are not inventoried by Spectra Services and are not able to be returned to the manufacturer
  • Products purchased on a special order
  • Products not purchased from Spectra Services
  • Products with an expired shelf life or an expiration date too short for resale
  • Discontinued products

Spectra Services reserves the right to review this policy on a case-by-case basis.

Pre-Owned Products

Upon receipt of the pre-owned product(s), the customer has one week to evaluate the product to ensure it meets their expectations. If for some reason the customer decides to return the product, they may do so at any point during those seven (7) days for a full refund. No restocking fee will be assessed, however, the customer is responsible for the return shipping costs. Full credit will be issued upon receipt and inspection of the item(s) to ensure equipment was returned in the same condition it was initially shipped out in.

Important Information

All exchanges and returns require the completion of a Return Merchandise Authorization (RMA) form. Once completed, please return the merchandise immediately as the RMA number is only active for ten (10) days from the date of issuance.

Charges associated with returning items are the responsibility of the customer unless the item(s) arrived defective, damaged, or incorrect.

Spectra Services highly recommends that return packages be insured for full value and packaged securely to prevent shipping damage.

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Your satisfaction is important to us! Use the form below to email us your questions about products, online orders, store experiences and more.

Order Questions:
If you need help or have any other questions concerning your orders, please fill out the form or call: 800-955-7732.

Our Address:
Spectra Services, Inc.
249 David Parkway
Ontario, NY 14519 US
Phone: 800-955-7732
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International Shipping Policy

and contact us if we can assist.

"Will I be charged for shipping?"

Shipping charges will be added to your invoice unless you provide us with your UPS, DHL, or FedEx account number. For a more detailed insight into our shipping process, see our shipping information page.

"I received a damaged shipment. What can I do?"

Accidental damage during shipment can sometimes happen. When you take delivery of your freight, please inspect thoroughly for any visible damage to the outside of the shipping container before signing for it. If there are multiple pieces to the shipment, please account for all them. Should you find that any of the products are damaged or missing after receipt, contact us within three days to address the matter.

"I'd like to make a return. How do I do that?"

Take a look at our Return Policy, and then contact us to continue with the process. Let us know if you have any questions.

"Can you guarantee pricing and availability?"

While we attempt to list and provide you the most up-to-date pricing, we reserve the right to make changes. Additionally, we cannot guarantee that we will always have a product in stock, but we do our best to accommodate your needs. If you have questions regarding pricing or availability, please do not hesitate to ask.

"Can you explain where you come up with the 'List Price,' please?"

Our "List Price" represents the full retail price as suggested by the supplier or manufacturer, the price estimated based on comparable items offered elsewhere in the marketplace, a former price the item was offered for by Spectra Services, or the price estimated in accordance with industry standards. Please note that we do our best to provide accurate list prices, and that it may vary by geographic location.

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