Spectrum Chromatography's
S-3 HPLC Solvent Recycler

Spectrum Chromatography's S-3 HPLC Solvent Recycler can reduce your solvent consumption by more than 80%.  It is on sale for $1,450.80.
The operating/service manual for Spectrum Chromatography's S-3 Solvent Saver System is available on-line in Adobe PDF format. You can use this to evaluate the S-3 before purchase or as a supplemental copy should you misplace the one included with your recycler.

Click here to obtain a copy of the manual. (About 154 kb long.)

You will need Adobe's Acrobat Reader to view the on-line edition. If you do not already have a copy, you may obtain a free one here.
Click here to order the 115V (domestic US) version.
Click here to order the 230V (continental Europe) version.
Spectrum Chromatography's S-3 Solvent Saver System recycles your HPLC solvents, reducing solvent consumption by 80% or more. Since solvent costs can be a big part of your analytical lab expenses, this can result in significant savings over the course of even a single year.

On Sale Now! The S-3 Solvent Saver System is now on sale over this web site only for $1450.80! This is about the same price as five 4L bottles of HPLC grade acetonitrile (VWR catalog number EM-AX0145P-1). If you use 25 liters or more of solvent for isocratic analytical HPLC analyses, your solvent savings alone will more than pay for the S-3 Solvent Recycler.

Your savings do not end with your reduced solvent costs. Solvent disposal costs can also be a significant expense for an analytical hplc laboratory. The reduction in solvent use also reduces your solvent disposal costs by a similar amut.

How It Works
Most of the time, and especially between runs, you will be pumping pure solvent into your columns and pure solvent will be leaving your column. This is generally pump from a reservoir of solvent and allowed to drain into a container of solvent waste. This pumping of expensive, pure, solvent into a waste container can be expensive and is certainly wasteful. The S-3 Solvent Recycler uses an inert (all TFE Teflon) valve to recycle the outlet of your column back to the original solvent reservoir.

Your existing detector (UV, fluorescence, refractive index, or other technology) can also be regarded as an impurity detector. When components of your sample elute off of the column, they represent "impurities" in the pure solvent background. When your existing detector sees these impurities, it changes its output, making a peak in the chromatogram. The S-3 HPLC Solvent Recycler recieves this same output from your detector. It uses this signal to determine when pure solvent is leaving the column.

While pure solvent is leaving the column, the flow from the column is directed back to the solvent reservoir. When your detector detects an impurity (when it makes a peak in the chromatogram), the S-3 Solvent Recycler diverts the flow from the column to your existing waste container. This keeps the solvent reservoir full of pure solvent and free of any components of the sample which you are analyzing.

Since most isocratic analytical HPLC systems spend most of their time recording a baseline, most (typically >80%) of the solvent can be recycled.

Technical Specifications
Power Requirements 115 +/- 25 VAC, 14VA
230 +/- 50 VAC, 14VA
Line Frequency 45 to 64 Hz
Dimensions (without valve) 21 cm x 10 cm x 17 cm
8.3" x 4" x 6.7"
w x h x l
Weight 1 kg (2.2 lb)
Hysteresis 0 to 9.9% full-scale in 0.1% steps
Set Point 0 to 0.5 V in .01 V steps or
0 to 5 mV in .1 V steps
Signal Input 1 V or 10 mv full-scale (user selectable).
Remote Inputs Contact closure or TTL low inputs for forced waste, forced recycle, and auto-zero.
Remote Output Open collector output to verify valve operation.
Operating Temperature 0 to 40°C non-condensing when left connected to the power mains.
Wetted Materials TFE Teflon

Note: Like all HPLC Solvent Recyclers, the S-3 Solvent Saver System is not suitable for use with gradient systems, it is only suitable for use when performing isocratic separations.

If you are doing preparative chromatography, a CF-2 Fraction Collector when used with an optional diverter valve provides all of the functionality of a solvent recycler and also collects your fractions.

Copyright © 2004 by Spectrum Chromatography, Houston, TX USA.
Please address all questions and comments to sales@spectra-chrom.com. You may contact us by phone at 800-459-9700 or +1-281-443-2900.