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The ability to switch between precise dosing and fast conveying make this pump model the perfect complement to a reactor system. With a flow rate of 2.0 - 4,056 ml / min, when operated with single-channel pump heads, flows from feed-batch and chemostat modes of operation can be conveyed precisely. Rapid filling and emptying of the reactor system is also possible.
In addition to the selectable process parameters - speed, tubing diameter, flow quantity display, dosing volume, interval dosing and break times - the pump conveying characteristics are stored in the program. Thanks to the analogue and digital (RS 232) interfaces, processes can be automated.
All media is conveyed with a control accuracy of ±2% at a speed of 24 — 600 rpm. An optional foot switch can be connected for dosing by foot pressure.
The pump drive of the model 120 of the Hei-FLOW Expert series can be operated with either single-channel or multi-channel pump heads. The flow rates with single-channel pump heads are in the range of 0.38 — 813 ml/min; with multi-channel pump heads from 0.005 — 329 ml/min.
By integrating an analog interface, it is possible to control all functions externally. In addition, an optional foot switch can be adapted to enable dosing by foot pressure. Hands thus remain free to perform other work, for example, to hold the tubing and the vessel.
A speed of 5 — 120 rpm with a control accuracy of ±3.5% guarantees optimum process results.
Multi-Channel Operation
• Increase your throughput by running up to 12 individual cassettes on one single pump drive and pump head system
• Separate metering into multiple vessels with different feed rates in a single operation by using different tubing dimensions to adjust flow rate
• Save time: tubing change is done in just seconds
• In addition to standard pump heads which feature a 4-roller system you can choose 8-roller pump heads for low pulsation
• Change your cassettes easily, even during operation – there are no restrictions
• Cassette adjustments and changes are simple, just click in place
• No additional purchase of a pump drive needed: upgrade your single-channel pump drive with just one adaptor for multi-channel use and pick the head/cassette configuration that matches your application needs
PharMed® Extension tubing for Cassette small
• Application: Ideal for medical, lab and research uses
• Features:
o High fatigue strength under repeated reversed bending stresses
o Non-toxic, biocompatible
o Very low gas permeability
o Well suited to acids and bases
• Material: Thermoplastic elastomer on a polypropylene base with plasticizers; excellent tensile strength; opaque
• Complies with the standards: USP Class VI, GLP, Pharmacopoea and Europaea
• Temperature range: -51 to +135 °C
• Sterilization: Can be autoclaved or sterilized with ethylene oxide or sterilized by irradiation
• Restriction: Additives may migrate
Used with:
Acids: good
Lyes: good
Solvents: unsuitable
Pressure: good
Vacuum: excellent
Viscous media: good
Sterile media: excellent
Silicone Two-stop tubing (40 cm) for Cassette small
• Application: Platinum-coated silicone hose for use in pharmaceuticals and biology
• Features:
o Extremely smooth interior prevents bacterial growth
o Biocompatible, minimal adsorption and absorption
o Best flow properties, high temperature stability
o Absolutely inert, softener-free
• Material: Polydimethylsiloxane with siliceous earth and silicone additives; translucent white; excellent resistance to initial pressure
• Complies with the standards: USP Class VI meets GLP and NSF
• Temperature range: -80 to +200 °C
• Sterilization: Can be autoclaved for 30 min at 1 bar or sterilized by irradiation
• Restriction: Not suitable for concentrated solvents, oils, acids or dilute caustic soda; relatively high permeability to gas
Used with:
Acids: conditional
Lyes: conditional
Solvents: unsuitable
Pressure: satisfactory
Vacuum: good
Viscous media: satisfactory
Sterile media: excellent
This model has a flow rate of 2.0 — 4,056 ml/min and is designed for operation with single-channel pump heads. The analog interface makes it possible that all functions can be controlled externally. A control accuracy of ±3.5% and a conveyor speed of 24 to 600 rpm provide optimum process conditions. In addition, sensitive media can be protected from influence by using the optional foot switch.
Like all Heidolph peristaltic pumps, the conveying direction of this model can be changed by a simple push of a button. Furthermore, the accelerated filling and emptying of the tubing is simplified, since here only the button for the maximum speed has to be pressed.
