PISTON PULSE LESS PUMPS
Separtrix PP03 are pulse less triplex piston pumps designed for preparative chromatography applications - nevertheless they can be used everywhere, where high pressure, precise flow without pulsations and high resistance against corrosion is needed. Pumps are equipped with unique compact three piston head for smooth flow and easy maintenance without a risk of leakage on connecting parts. Back flushed pistons are covered by hard and chemically resistant polycrystalic carbon layer. Piston cylinders have low dead volume and samples injected through the pump appear low spreading.
Pumps with different flow rate ranges differ only in head type, piston diameters and tubing diameters. Separtrix PP03 are usually supplied with an asynchronous motor and frequency converter but are also available with step motor which allows using the pump in extremely broad range of flow rates - both for analytical and preparative applications.
Special configurations of Separtrix PP03 pumps are used for three phases low pressure gradient – in this case is extremly important that these pumps offer nearly constant flow rate not only on the output but on the input too. Low pressure gradient units are delivered with three solenoid valves on the plate which can be connected to the pump side. Power supply for valves is installed inside the pump box. 10 linear steps can be programmed.
Separtrix PP03 pumps are delivered in configuration for high pressure binary gradient as well. Two pumps – master and slave types – are working together. Master pump controls the flow rate and gradient composition (10 linear steps), slave pump is delivered without control display, keyboard(s) and pressure sensor. All Separtrix PP03 pumps are equipped keyboard(s) and graphic display. There is a possibility to set flow rate, pressure limit and flow correction. A second keyboard is included for gradient programming in case of low pressure gradient pumps and high pressure gradient master pumps.
Separtrix PP 03 can be used in mode of remote control. Pumps can cooperate with Clarity data station (Dataapex). Flow rate, gradient composition and pressure limit can be programmed. Control module for PP 03 pumps was successfully tested and agreed by Dataapex. PP 03 pumps can be controlled using Ecom software ECOMAC as well.
PISTON DIAPHRAGM PUMPS
The piston-diaphragm pumps hydracell with multimembrane head provide smooth pulseless flow in a wide range of flow rates and delivery pressure with high repeatability and accuracy and are ideal for dosing mobile phase into large preparative units.
hydracell G03 is the piston-diaphragm pump with anti cavitation system “Kell-Cell”. Special system of channels equalizing pressure on both sides of the membrane, which prevents cavitation damage of the pump. Stainless steel head and sturdy construction ensure long life and minimal maintenance costs, as well as double hydraulically balanced diaphragm and sealing free piston design. Checking the oil level stops the engine when the level drops to prevent mixing of oil into the mobile phase in the case of destruction of some of the membranes.
Wanner hydracell G10 with cam are used for different types of applications, usually involving liquids recycling. They provide smooth pulse less flow in a wide range of flow rates and pressures with high repeatability and accuracy and are ideal for dosing. Checking the oil level in the pump, followed by stopping the engine when the level drops, to prevent mixing of oil into the mobile phase in the case of destruction of some of the membranes.
The pumps are equipped with heads made of stainless steel (AISI 316). They are suitable for temperatures up to 70° C and are supplied with engine, clutch and durable metal frame for installation in industry. Both G03 and G10 pumps can be supplied also in a version for hazardous areas according to ATEX Ex de II T4.
Wanner hydracell G04 are used for high flow, high pressure application. They also can be used in higher temperature range. They are the piston-diaphragm pumps with anti cavitation system “Kell-Cell”. Special system of channels equalizing pressure on both sides of the membrane, which prevents cavitation damage of the pump. Stainless steel head and sturdy construction ensure long life and minimal maintenance costs, as well as double hydraulically balanced diaphragm and sealing free piston design.
Pressure filters are closed pressure vessels made of two flanges with a frit (filter) between input and output. They are quite similar to prep chromatography columns in fact. Separfil XXX/YYY units are designed with a filter frit made either of stainless steel (3 µm pore size) or of non woven polypropylene fabric (10 µm pore size). Frit (filter) sealing is made of UHMWPE. Pressure filters make good service to save input column frit as samples under separation are a source of solid or gel particles. XXX numbers specify frit diameter and YYY number maximal pressure for filter use.