77
Tubing
Flexible Peristaltic Tubing
Peristaltic Pumps andTubing
The pumps presented on pages 94 – 108 require peristaltic tubing
to operate. Flow rate of a given fluid through a peristaltic tubing
pump depends on two variables:
1. The speed of the pump, measured in revolutions per minute (rpm)
2. The volume held with the internal diameter (ID) of the selected tubing
Variable Speed Pump Flow Rates
For a variable speed pump, such as the products on pages 94 – 100,
112 – 115, and 119 – 118, the fow rate of a channel can be changed
by varying the pump rpm, or by using tubing with different IDs, or a
combination of both.
Fixed Speed Pump Flow Rates
For a fxed speed pump, such as theMS/CA line on page 108, the only
variable is the tubing ID. Therefore, to change the fow rate of a fxed
speed pump channel, the operator must use tubing with a different ID.
Single-channel andmultichannel peristaltic tubing pumps are available
in this catalog. The number of channels refers to how many pieces
of tubing that can be used simultaneously. Tubing with different IDs
can be used in each channel to deliver varying fow rates at any given
pump speed.
Connectors and adapters for peristaltic tubing are on pages
59, 60 and 61.
Related Products
Ordering your PumpandTubing
Follow these steps to complete your Ismatec
®
peristaltic tubing
pump order:
1. Select the pump for your application from pages 91 – 124,
determined by the requirements of your fuid delivery task(s):
a. Level of accuracy
b. Fluid streams (# of channels)
c. Flow rate range(s)
d. Need for constant fow, discrete dispensing, or both
e. Need for variable speed
f. Need for automation/programmability
2. Note whether the selected pump requires 2-stop, 3-stop or
standard tubing.
3. Review the tubing properties tables on pages 63, 70, 75 and 76 and
select the tubing material best suited for your application.
4. Review the page that contains information andoptions for the tubing
material you have selected.
5. Identify the correct part number for the tubing you need, based upon
two factors: a) if your pump requires tubing with stops or not, and if
so how many; and b) the correct inner diameter and wall thickness
for the model pump you are using.
6. If required, order extension tubing that corresponds as closely as
possible to the tubingmaterial and IDof your 2-stopor 3-stop tubing.
FOR ORDERING & DISTRIBUTOR INFORMATION +1 800 426 0191 • +1 360 679 2528 • www.idex-hs.com