Guide for KNF laboratory liquid pumps
After reading this guide you will have no doubts about which model to choose between the KNF LIQUIPORT or SIMDOS liquid pumps. 3 simple steps to direct you to the exact diaphragm pump you need. Then, all the models in detail with links to our shop, installation advice, use and curiosities.
1. LIQUIPORT OR SIMDOS?
First, let's try to understand: do you need to transfer liquids or even dose them? Here the choice is simple, the difference in flow rate between the two series is very different:
SIMDOS
Dosing pump which can also be used for transferring liquids.
Many different laboratory applications require precise and accurate dosing of liquids. Whether it's dosing specific quantities or dosing constant amounts of fluid, a diaphragm pump like SIMDOS can deliver the required precision and highly reproducible results.
Scope:
SIMDOS 02: from 0.03 to 20 ml/min.
SIMDOS 10: 1.0 to 100ml/min.
Dosing volume: 0.03 – 999ml and 1.0 - 999ml.
Applications in:
LIQUIPORT
Liquid transfer pump.
Transferring liquids can mean many different things in the lab.
An example is the removal of HPLC waste into a collection vessel and transfer of the mobile phase from a large vessel to a smaller one.
Liquiport gives you the ability to safely, reliably and efficiently transfer liquid fluids.
The simple control knob allows you to select the desired flow rate.
The RC (remote control) and RC Plus versions offer remote control of the pump.
Flow rate and pressure:
LIQUIPORT NF 100: from 0.2 to 1.3 l/min; pressure 10 mWg.
LIQUIPORT NF 1.100: from 0.2 to 1.3 l/min; pressure 40 mWg.
LIQUIPORT NF 300: 0.5 to 3 l/min; pressure 10 mWg.
LIQUIPORT NF 1.300: from 0.5 to 3 l/min; pressure 40 mWg.
Applications in:
2. CORROSIVE LIQUIDS?
With which liquids will you use your KNF pump? What is their degree of corrosivity? You may need to equip your pump with special materials to resist the liquids you will be using.
CHEMICAL RESISTANCE TABLE - LIQUID PUMPS
Download the CHEMICAL RESISTANCE CHART - LIQUID PUMPS to understand which material is best suited to transfer your liquid.
Warning: this table is used to evaluate the resistance of the materials used in KNF liquid pumps to the various fluids; read carefully and keep in mind that the values indicated are to be considered indicative. These values can be influenced by factors such as high temperatures, maximum concentrations, mixing of individual media, etc. To ensure that the material is resistant to the fluid to be pumped it is recommended to carry out a soak test.
In our webshop you will find pumps with the most commonly sold materials for sale. For special materials and accessories contact us.
Main versions for SIMDOS series (KT, TT, FT, ST):
Main versions for the LIQUIPORT series (KT, TT, FT):
3. MANUAL OR REMOTE CONTROL?
For each model it is possible to choose between different types of control.
SIMDOS models are available in the versions:
- S: manual operations.
- RC: manual operations; analog control 0-5V, 0-10V, 0-20mA, 4-20mA, 1 to 100%; start/stop with TTL (Transistor-Transistor Logic); Reset/Prime via (TTL); fault alarm output signal; external control cable included.
- RCP: like RC but with RS 232 port and cable for PC control.
LIQUIPORT models are available in the versions:
- S: manual operations.
- RC: manual operations; 0-10V analog control from 0 to 100%; start/stop with TTL; fault alarm output signal; external control cable included.
As an accessory, you can have a foot switch (not for 'S' versions):
PRODUCT PRESENTATION
SIMDOS KNF laboratory diaphragm dosing pumps
Thanks to their compact and space-saving design, SIMDOS pumps take up very little space on the laboratory bench.
SIMDOS laboratory dosing pumps are self-priming and can run dry without damage. They are easily calibrated for accurate, repeatable and reliable results. Control is by simple buttons and a rotary knob. From the display you can set dose, volume, flow rate and other operating parameters to meet the needs of your applications. The integrated software also allows you to change the transfer parameters for a range of different viscosities at the touch of a button. The IP65 housing is splash-proof.
KNF offers two series of SIMDOS liquid dosing pumps: SIMDOS 02 and SIMDOS 10; differentiated by flow rate and dosing volume.
Advantages:
Models available:
SIMDOS 02 →
- Flow rate: 0.03 - 20ml/min.
- Dosing volume: 0.03 – 999ml.
- Suction height: 2 meters (water).
- Maximum pressure: 85 psig.
Versions - Types of control
S2: manual operation.
RC2: manual operation; analog control: 0-10V for 0 - 100%; run/stop by logic control; failure alarm output signal; RC cable for external control included.
RCP2: like RC2, plus RS 232 port for PC control and RS 232 cable with D-Sub 9 connector included.
SIMDOS 10 →
- Flow rate: 1 – 100ml/min.
- Dosing volume: 1 – 999 ml.
- Suction height: 3 meters (water).
- Maximum pressure: 85 psig.
Versions - Control types (like SIMDOS 02)
S2: manual operation.
RC2: manual operation; analog control: 0-10V for 0 - 100%; run/stop by logic control; failure alarm output signal; RC cable for external control included.
RCP2: like RC2, plus RS 232 port for PC control and RS 232 cable with D-Sub 9 connector included.
Laboratory diaphragm pumps for liquid transfer KNF LIQUIPORT
For transferring chemically aggressive liquids.
These simple KNF pumps provide the solution you need to safely transfer liquids between containers and vessels.
Examples of use include: removal of HPLC waste into a collection vessel; transferring the mobile phase from a large to a small container; filling/emptying of reactors or dissolution equipment; bath temperature management.
LIQUIPORTS have a flow rate of up to 3 l/min, with clean, silent and oil-free operation. A choice of pump head materials (PP, PVDF, PTFE) ensures compatibility with even the most aggressive media. LIQUIPORT pumps are self-priming, can run dry indefinitely without damage and are maintenance free. Models NF1.100 and NF1.300 have a higher pressure rating and all models are available with manual or remote analog control capabilities.
Advantages:
Models available:
NF 100
Flow rate: 0.2 - 1.3 L/min.
Suction height: 3 meters (water).
Maximum pressure: 15 psig.
NF 1.100
Flow rate: 0.2 - 1.3 L/min.
Suction height: 3 meters (water).
Max pressure: 58psig.
NF 300
Flow rate: 0.5 - 3.0 L/min.
Suction height: 3 meters (water).
Maximum pressure: 15 psig.
NF 1.300
Flow rate: 0.5 - 3.0 L/min.
Suction height: 3 meters (water).
Max pressure: 58psig.
Versions - Types of control
S2: manual operation.
RC2: manual operation; analog control: 0-10V for 0 - 100%; run/stop by logic control; failure alarm output signal; RC cable for external control included.
RECOMMENDATIONS FOR USE
Follow these instructions to minimize problems due to misuse of the tool.
IMPORTANT! After connecting the pipes, install the filter on the suction side, even if the liquid is pure. Purity is calculated primarily on the concentration and not on the presence of particles or fibers in the liquid.
APPLICATION EXAMPLES
Legend for the graphical display of the applications:
APPLICATION 1 - CONTAINER PLACED BELOW THE LEVEL OF THE PUMP
To achieve the specified measurement accuracy follow the instructions below:
Recommendations: to install the pump in an elevated position, you can use the optional KNF wall or column mounting kits.
APPLICATION 2 - CONTAINER PLACED ABOVE THE LEVEL OF THE PUMP
Note: Overpressure on the suction side reduces the accuracy of the pump. In order to avoid uncontrolled leakage of the liquid, a check valve must be used on the pressure side.
APPLICATION 3 - MEASUREMENT OF VOLATILE LIQUIDS
For precise dosing of low vapor pressure liquids, such as
solvents, the system should be set up as shown in the figure below.
In order to protect the system from overpressure, a safety valve must be fitted below the level of the pump.
SPECIAL APPLICATIONS
ELECTROLYTIC CLEANING
Electrolytic cleaning requires adjustable flow rate and reliable operation. In this new experimental method, two KNF SIMDOS® 10 dosing pumps are connected to the electrolytic brush which move the cleaning fluid.
To find out more about this new technology, KNF has dedicated a comprehensive article to it: How KNF Pumps Help to Restore Precious Silver Treasures from the Middle Ages.
