Laboratory Products 45 Precise Dosing for Fully Automatic CMC Measurements
At analytica 2014, Krüss GmbH presented the Micro Dispenser, a dosing unit for fully automatic measurements of the critical Micelle concentration (CMC). The Hamburg-based manufacturer of measuring instruments has developed the Micro Dispenser especially for the Force Tensiometer K100, which has taken up an established position in the market for some time now.
Two combined Micro Dispenser units create the whole concentration series for the surfactant to be analysed directly inside the measuring vessel of the tensiometer. The K100 measures the surface tension between the respective dosing steps fully automatic by using the ring, plate or rod method.
By software-controlled dosing and subsequent removing the added volume between measurements, a vast number of concentrations can be analysed without being limited by the vessel size. Thus, a dilution by several orders of magnitude can be achieved in order to cover the concentration range of the CMC reliably.
Since the concentration steps can also be chosen very close to one another, the CMC can be determined based on a large number of measurements and thereby with high precision. The very accurate dosing volume of the Micro Dispenser minimises the systematic measurement error even for very large concentration series. This also contributes to the precision of the system.
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Single-Parameter Handheld Instruments for pH, Conductivity and DO
WTW introduces the new Monoline series of single-parameter handheld instruments for intelligent digital sensors (IDS).
Three separate models are available for the respective parameters: pH 3310 IDS, Cond 3310 IDS, and Oxi 3310 IDS. (The latter model corresponding to WTW’s former Oxi 3315.)
The instruments are suited for all fi eld and process applications, they are robust and waterproof according to IP 67. Operation is easy via a backlit graphic display and plain text menus. The measured data can be stored in a large memory and output according to GLP to a PC or laptop via a waterproof USB interface.
The Monolines are perfect for users that need to measure only one parameter but do not want to miss the advantages of the digital IDS sensors: automatic transmission of calibration data and sensor parameters, secure digital signal transmission from the sensor to the instrument, cable lengths of up to 100 m and automatic documentation of all sensor data.
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New Computer Printable Label for Liquid Nitrogen Storage
The A-Z of reusable plastic labware
For more than half a century, the Azlon®
name has been synonymous
with high quality affordable plastic laboratory ware.
Available in a variety of polymers, Azlon®
Perfect for LN2 freezing and long-term cryogenic freezer storage, laboratory labelling specialists CILS have launched the ultimate computer printable durable label for ultra low temperatures, providing immediate permanent adhesion to all cyrovials, tubes and liquid straws stored down to -196ºC.
Available in any format including ‘cap & tube’ label sets, variable data (lot numbers, barcodes etc) can be added in minutes straight from a standard laser, inkjet or thermal transfer printer; saving time and eliminating the risk of smudged/illegible handwritten data, providing reliable sample ID for liquid nitrogen storage.
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reusable plastics cover a broad range of applications in the modern education laboratory, offering more than 700 products including bottles, wash bottles, measuring cylinders, jugs and beakers.
For more information about our products, please visit our website
www.scilabware.com
SciLabware Ltd., Unit 4, Riverside 2, Campbell Road, Stoke on Trent, ST4 4RJ, UK Tel; +44 (0)1782 444 406 Fax; +44 (0)1782 940 436
enquiries@scilabware.com
www.scilabware.com
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sales@adamequipment.cn 1446ad@reply-direct.com Expert Analysis
Some moisture analyzer manufacturers provide precision at a price. Others boast about their inexpensive products, but the quality is questionable.
PMB
Lab professionals worldwide know that Adam Equipment’s PMB moisture analyzer delivers the right balance of precision, performance and value.
Find the right balance at
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