|Spectrum® Chromatography||18211 Chisholm Tr Ste 300|
Houston, TX 77060
|Phone: 281-443-2900||Fax: 281-443-3100|
|Toll-free: (800) 459-9700 (US & Canada)|
In a peristaltic pump, the flow rate is determined by both the size of the tubing and the pump speed. Larger tubing produces faster flow rates. You can use the chart below to select the appropriate tubing for the flow rate you need.
In a peristaltic pump, the tubing is the only material that is in contact with the working fluid. This provides a peristaltic pump with 2 advantages over other pump types. The first is that you can change the tubing to prevent contamination; since the tubing is all that is wetted, removing it would remove any trace of the previous solvent. The second is that you can tailer to chemical compatibility of the pump to your application; you can use more expensive fluoroelastomer tubing when pumping halogenated solvents and less expensive vinyl or silicone tubing when pumping aqueous solutions.
(OD x ID)
|5/32" x 1/32"|
(4 x 0.8 mm)
|3/16" x 1/16"|
(4.8 x 1.6 mm)
|1/4" x 1/8"|
(6.3 x 3 mm)
|3/8" x 1/4"|
(9.5 x 6.3 mm)
|7/16" x 5/16"|
(11 x 8 mm)
|3/8" x 3/16"|
(9.5 x 4.8 mm)
|Flow Rate with MP-1 Pump (ml/min)||0.03 – 3.6||0.11 – 12.6||0.4 – 48||1.4 – 168||1.9 – 228||0.83 – 100|
|Flow Rate with MP-2 Pump (ml/min)||0.36 – 36||1.3 – 126||5 – 480||17 – 1680||23 – 2280||10 – 1000|
|Recommended Pump Head:||Fast Load
|Tubing for use with pump heads:|
Silicone Tubing (LPS). This is the most commonly used material for peristaltic pump tubing. It provides the longest service life and good chemical compatibility for aqueous and many organic solvents. Its service life is about 150 hrs at 600 rpm and 825 hr at 100 rpm. It can usually be left running on experiments during weekends without much danger of rupture. A fresh section of tubing should be pulled through the pump rollers before any running peristaltic pump is left unattended. Silicone tubing can also be autoclaved a single time with a wet cycle without a significant reduction in its life.
Vinyl Tubing (LPV). Vinyl tubing has the lowest per-foot cost of any peristaltic pump tubing. It generally has only fair compatibility for many aqueous solvents and does not have a tolerance for many organic solvents. It only has a third of the service life of silicone tubing, 50 hr at 600 rpm and 275 hr at 100 rpm. We do not recommend leaving a peristaltic pump using vinyl tubing unattended. If it must be left unattended, a fresh section of tubing should be pulled through the pump roller immediately prior to leaving. Vinyl tubing cannot be autoclaved and should not be exposed to temperatures above 80°C.
Fluoroelastomer Tubing (LPF). Flouroelastomer tubing is both the most chemically inert peristaltic pump tubing and the shortest lived. It can withstand even halogenated solvents for a short time. Its service life is only 30 hr at 600 rpm and 165 hr at 100 rpm. Because of the short life, we do not recommend that a peristaltic pump using flouroelastomer tubing be left unattended. If it must be left unattended, a fresh section of tubing should be pulled through the pump roller immediately prior to leaving. Like silicone tubing, flouroelastomer tubing can be autoclaved a single time with a wet cycle without a significant reduction in its life.
The Spectra/Chrom® Tubing Cutter cuts most polymer tubing, leaving a flat, even edge. The special "V" shape of the tubing holder keeps the tubing perpendicular to the blade. The blade remains sharp for many cuts, but it can easily be replaced.
The Spectra/Chrom Tubing Cutter can be used on most flexible tubing 1/2" (13 mm) OD or smaller. It is not for use on metallic tubing. Use part number 123367 ($34.00) for the tubing cutter and 123368 for a package of 5 replacement blades.