The difference between the syringe pump and the peristaltic pump
The difference between syringe
pump and peristaltic
pump:
The syringe
pump draws or discharges liquid through the piston movement like an injection. It is generally more accurate than the peristaltic
pump and is easy to operate. The peristaltic
pump absorbs or removes the liquid by the elasticity of the rubber tube, and there is a problem that the accuracy of the hose is deteriorated due to aging.
Advantages of the syringe
pump:
The injection
pump injection accuracy is an order of magnitude higher than that of the peristaltic
pump injection, which enables automatic calibration of the standard curve and improves work efficiency.
Disadvantages:
1. The injection unit wears faster, and if the sample size is large, the service life is short. Generally, the quality of the injection unit of the peristaltic
pump manufacturer is relatively poor, and the cost of the import is relatively high.
2. Injection injection line is more complicated, which results in easy pollution, large memory effect, and difficult to clean.
3. Injecting the injection system If the air bubble is introduced into the tube, it is generally difficult to completely eliminate it, and the injection is inaccurate, especially the position of the multi-position valve and the sample storage ring, and it is particularly easy to store air bubbles.
4. Reproduct consumption is not less than intermittent flow injection. The working procedure of the syringe
pump is to perform a measurement procedure first, followed by a cleaning procedure. In fact, this cleaning procedure consumes a lot of reproducts. You can set up the cleaning process yourself. If you are concerned about the cleaning effect, you can only use the default cleaning program.
Advantages of peristaltic
pumps:
The peristaltic
pump produced by the professional peristaltic
pump manufacturer has a simple structure, convenient maintenance and low cost. The consumable parts are
pump tubes. If you pay attention to silicone oil, you can usually use it for about 2 years.
Disadvantages:
Injection is not as accurate as injection. Because the peristaltic
pump injection instability factors are more, the first is that the peristaltic
pump motor is affected by voltage instability, causing the rotation to be not constant, and secondly, the compression degree of the
pump tube will cause the injection volume to change.