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CF-2 Fraction Collector

Make Sure You Don't Lose a Drop

A fraction collector is a necessity for any preparative liquid chromatography work. Whether you're purifying small samples with preparative HPLC or larger samples on open columns, you need to collect the different materials you so carefully separated chromatographically in separate containers. The CF-2 Fraction Collector is designed with a stationary drop head where the tubes move under the drop former insuring every drop is collected.

The CF-2 Fraction Collector is a very durable general-purpose fraction collector that meets both your preparative LC and open column LC needs. It is the long anticipated successor to the CF-1 Fraction Collector and features the same rugged drive and rugged matallic casework.

The CF-2 Fraction Collector can collect up to 174 fractions in standard 13 mm test tubes or up to 116 fractions in smaller 10 mm diameter tubes. For those who do assaying after collection, the CF-2 can collect directly in 17 or 28 mm diameter scintillation vials.

The CF-2 is sold complete and ready-to-use. It includes tube holders for 12 or 13 mm diameter tubes, a drop counter, and tubing fittings. All you need to add are the test tubes.

The CF-2 includes a powerful peak detector that lets you separate the low-level "in-between" material from the peaks. Simply connect the chart recorder output from your detector to the input of the CF-2 and you can put different amounts in the peak and non-peak tubes as well as keep your peaks more concentrated by separating them from the non-peak material. Add a 3-way diverter valve and you can skip collecting the in-between material.

While most chromatography needs can be met with the standard CF-2, options are available that can expand its versatility:

  • Collect up to 29 fractions from each of 4 separate columns simultaneously with the 4-column adapter.
  • Short on bench space? use the mast package to move other instruments and accessories up, out of the way.
  • Worried about dust or other contamination when doing long collections? Then use the dust cover to reduce the chances of this happening.

Special Features of the CF-2 Include:

  • Collects up to 174 fraction
  • Cold-room compatible
  • Includes tube racks for 12 or 13 mm diameter tubes
  • Includes drop counter
  • Includes peak separator
  • Tube sizes from 10 to 18 mm diameter
  • CE marked & complies with RoHS

CF-2 Fraction Collector Technical Specifications:

Tube Capacity:174 12 or 13 mm tubes
116 10 to 16 mm tubes
116 18 mm tubes or vials
42 28 mm tubes or vials
Collection Basis:6 sec to 999 min and 59 sec in 1 sec increments,
1 drop or volume to 9999 drops or volumes in 1 drop or volume increments.
Tube Change Time:0,35 sec maximum within 12/13 mm rack
Dimensions:28 cm x 12 cm x 40 cm
11 x 4,5 x 16 inch
w x h x l
Weight:5 kg (10 lb)
Operating Temperature:0°C to 40°C, noncondensing
Power Requirements:115 ± 20 VAC, 20 VA
230 ± 40 VAC, 20 VA
Line Frequency:45 to 65 Hz
Event Mark Output:Open collector outputs, 1 for tube change, 1 for rack change.
Count Input:TTL low or contact closure for 1 ms to 1 s, or drop counter. Maximum count rate is 5 per second.

Ordering Information: click on Product No. to add to cart

Product No.DescriptionPrice

124845CF-2 Fraction Collector, 115V, includes racks for 12 to 13 mm diameter tubes and drop counter.REQUESTorder part 124845
124846CF-2 Fraction Collector, 230V, includes racks for 12 to 13 mm diameter tubes and drop counter, CE & RoHS.€3,229order part 124846
124867CF-2 Fraction Collector, 115V, includes drop counter but no tube racks. You will need to order a set of tube racks separately.REQUESTorder part 124867
124878CF-2 Fraction Collector, 230V, includes drop counter but no tube racks. You will need to order a set of tube racks separately. CE & RoHS.€2,971order part 124878
124853Set of tube racks for holding up to 174 tubes of 12 or 13 mm diameter.€425order part 124853
124854Set of tube racks for holding up to 116 tubes of 10 to 16 mm diameter.€447order part 124854
124855Set of tube racks for holding up to 116 tubes of 17 or 18 mm diameter.€681order part 124855
124856Set of tube racks for holding up to 42 scintillation vials (28 mm diameter).€709order part 124856
1248493-way diverter valve. Used with the peak separator to only collect peaks and to divert the flow at the end of a run to facilitate unattended operation.€435order part 124849
124838Higher flow 3-way diverter valve. Has a 3/32" orifice for higher flow rates. Used with the peak separator to only collect peaks and to divert the flow at the end of a run to facilitate unattended operation.€703order part 124838
1248482-way shutoff valve. Stops the flow to the fraction collector between tubes and at the end of a run.€458order part 124848
124858Dust Cover for fraction collector. Reduces the risk of contamination to your fractions by any airborn dust.€239order part 124858
124874Mast package for CF-2 Fraction Collector. Attaches 2 vertical masts to the back of the fraction collector for supporting other laboratory items.€244order part 124874
1248764 column adapter for CF-2 Fraction Collector. Collects up to 29 fraction from each of up to 4 columns simultaneously. Requires the Mast package (above) for proper operation.€1,009order part 124876

Click on any part number for pricing information or to place an order.

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Interval Sampler

The IS-95 Interval Sampler is similar to a fraction collector. But, instead of collecting all of the material coming from the column, it is used to periodically sample a liquid flow or container.

UV Detector

The Model 280 UV detector is ideal for use with the CF-2. This inexpensive filter-based detector features a similar rugged design and it suitable for use in the cold room.


The manual for the CF-2 Fraction collector is available on-line here.

The CF-2 Fraction collector is also described here and here.

hi dave
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