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Every lab should have at least one centrifuge, and the Ultra 8 series
offers perfect all-around solutions at very reasonable prices... they have
all the features you'd expect in a tabletop centrifuge: variable speed,
timed shutoff, quiet operation, and sturdy construction.
The Ultra 8 series centrifuges are very useful for separations in analytical
work. They're also ideal as part of any small-scale protein purification,
such as catalase experiments in the classroom.
The E8F centrifuge is an economical, fixed-speed unit designed for blood
samples.
Ultra 8V Specifications: • 8-place rotor • Variable speed control • Auto-off 30-minute timer • Runs on 110/120 volts AC • Includes eight 15-mL tube sleeves • Includes eight tube sleeve inserts that hold 12 x 75 mm test tubes • Will accept standard 15 mL centrifuge tubes • Suction cup feet help prevent slipping • Locking lid is impact-resistant & transparent • Safety shut-off switch in lid • One-piece, all-metal body • 1-year materials & workmanship warranty |
Centrifuge use and safety tips are available on their own page. Ultra 8V: Variable speed Ultra 8S: Select-speed Please see below for details |
Footprint / Width: The centrifuge's footprint is an equilateral triangle (with the corners truncated). The maximum width of the unit is about 14 3/4 inches.
Height: Maximum height (taking into account the locking knob on the lid) is about 9 inches.
Weight: 15.5 lbs.
Important: The manufacturer has recently advised us that some 15 mL centrifuge tubes are a bit too long to function properly in the Ultra 8 centrifuges. Newer Ultra 8 units have a metal rod that is part of the lid / handle assembly; this protrudes into the space above the rotor. The longer tubes will hit this rod.
Please use only 120 mm conical centrifuge tubes. According to the manufacturer, 120 mm is the maximum recommended overall length (including cap).
Ultra 8 Variable Speed
...The analog speed-control dial on the Ultra 8V allows a full range
of rotor speeds up to 3300 rpm, for a maximum RCF of 1350 x
g. The lid has
a safety-shut off switch; however, if the rotor is moving already,
it will continue to spin under its own inertia even after the lid is opened.
If you require a "zero rpm lock", please consider the Ultra 8 "Tach"
(see below).We also offer a hand-held tachometer (sold separately; see below) that is useful with this unit; calibrate your Ultra 8V with the tach and use it to mark specific speeds around the dial. The Ultra 8V does not provide any graduations or markings as to rotor speed. If you need something having specific settings for common samples / body fluids, please consider the Ultra 8 Select (see below).
Ultra 8V centrifuge................$339
Manuf. suggested retail is $394
Ultra 8 Select
... features four, pre-set speeds so you don't have to guess. The Ultra 8S allows clinical laboratories to spin body fluid samples at precise, CLIA recommended speeds. This allows samples such as blood to be spun fast enough for consistent separation, yet it prevents cell structures from being torn apart by excessive rotor speeds.The pre-set speeds are 800, 1,500, 1,800, and 3,300 rpm.
This corresponds to RCF of approximately 80, 275, 400, and 1,325 times g, respectively.
Ultra 8S Centrifuge..............................$399
Manuf. suggested retail is $471
Digital Tachometer for Centrifuges
...a separate, hand-held unit that allows quick and easy determination of your exact rotor speed. This is highly desirable if you're doing biochemistry, cell biology, and so forth.
Digital Tachometer................................$179
MSRP is $189
Centrifuges are usually ready to ship 5-7 business days after we receive your order.
Looking for centrifuge tubes? 12 x 75 mm test tubes will work in the smaller inserts. Standard 15 mL centrifuge tubes (glass, unmarked) are also in stock.
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