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The Intuitive Dosing Pump for Aggressive and Corrosive Liquids
Dosing very aggressive and corrosive liquids in laboratories is a challenge. Diaphragm pumps are the ideal tool for this difficult task.
The new SIMDOS® 02 FT (PTFE) from KNF has been especially developed for the transfer of aggressive chemicals. To do this, the SIMDOS® 02 FT is fitted with a PTFE head, a PTFE- covered diaphragm, and chemically resistant FFKM Kalrez® valves. An optionally available Chemraz®-valve kit even allows using the pump with highly concentrated acids such as nitric, sulphuric and hydrochloric acids and solvents such as TFH, DMF, DMSO and MEK. The pump head is situated outside the splash-protected IP-65 housing, providing a very significant safety feature.
Also available with heads in PP or PVDF, the new SIMDOS® 02 FT dosing pump transfers liquids with a flow rate of 30 µl to 20 ml/min, and dose volumes of 30 µl up to 999 ml. Following calibration, repeatability is +/-1% (full range) and the pump offers excellent long-term stability and consistent reliability throughout entire processes. The SIMDOS® 02 FT is safe to run dry and is self-priming up to 2 m. It is effective against pressures of up to 6 bar, and transfers viscous media up to 150 centistokes. The integrated software permits the transfer parameters to be modified for a range of different viscosities at the touch of a button. Thanks to its neat design and small footprint, the new SIMDOS® 02 FT dosing pump takes up very little valuable laboratory space.
SIMDOS® 02 FT highlights include: FT head / FFKM valves for aggressive and corrosive liquids; intuitive operation; fast and simple calibration; pause function without data loss; adjustable transfer parameters; splash-protected design for increased safety; minimal footprint.
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Illustrated Guide to Identifying the Ideal Small Bore Liquid Flowmeter
Titan Enterprises has produced an informative illustrated guide to help simplify the process of identifying and selecting the best type of small bore flowmeter (< 0.5-inch / 12.5mm bore) for a particular application.
Achieving optimal performance from small bore flowmeters has very different challenges to those faced when using larger diameter meters. As the flows are lower, less energy is available in the liquid to convert to mechanical movement. The liquid is often running in the laminar flow region and viscosity and boundary layer effects become very important. Generally speaking the smaller the meter the harder it is to make an accurate inline measuring device but the easier it is for the user to check the performance.
Titan Enterprises informative guide discusses the ten main flowmeter technologies and provides an unbiased comparison between each based upon 5 critical operating parameters (cost, linearity, operating range, minimum flow and repeatability) using an easy-to-understand pentagonal graphic illustration of their relative performance in these aspects.
The guide concludes to find the ideal flowmeter for small bore applications that there are several options for any given low flow rate and that choice is likely to be a compromise between performance, price and operating parameters. New generation ultrasonic meters are shown to satisfy a wide range of requirements, performing very well across all parameters. However, if exceptionally low flow detection is required, then thermal meters are perhaps the only option. If low cost is the prime determinant the guide shows that variable area devices are good for local indication but for inexpensive electronic outputs, Pelton wheel meters are also hard to beat. Finally, if ultimate accuracy is required, then Coriolis meters can provide the highest performance unfortunately often at a premium price.
To download a copy of this illustrated guide please visit
www.flowmeters.co.uk/flowmeters-below-half-inch-bore.php 28261pr@reply-direct.com
The Spotlight could be on you!
Contact Gwyneth Astles on +44 (0)1727 855574 or email:
gwyneth@intlabmate.com
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