34
Issue 4 2017
sieves, shakers, mixers & blenders
Multiple applications for Retsch horizontal sieve shaker THE analytical sieve shaker AS 400 control is used in research and development, quality control of raw materials, interim and finished products, as well as in production monitoring. The AS 400 control is used for the sieving of dry goods with test sieves of a diameter of up to 400mm. In this, the uniform, horizontal circular motion ensures exact separation of fine and coarse-grained products. With its all-digital controls and calibration certificate, the AS 400 control is indispensable for all users who attach importance to precision and operational convenience and need to comply with the guidelines of the ISO 9001. The AS 400 can be used for construction materials, ground corn, plastics, sand and splints, and more.
Haver and Boecker rotary sample splitter for highprecision sample division THE sample splitter from Haver and Boecker prepares small but representative samples of solids and suspensions and is combined with highprecision measuring instruments. It is used in laboratories for research, development and process monitoring. Rotary sample splitters combine three splitting processes in one device and offer the best sample division that is possible today. The sample is fed to a splitting cone, the shape of which corresponds to quarters and cones. The sample material is accelerated outwards on the circumferential surface of the cone and is split up through guide ducts into max. 30 individual flows. The individual samples are collected in screw cap glass bottles of 250ml and 500ml that can be fixed in place easily and safely by means of a quick-acting clamping device. Variable division ratios of up to 3 000 division steps per minute are possible due to the rotation and the number of division ducts so that each sample consists of a very large number of individual samples – a feature of exact sample splitting. Thus, the rotary cone sample splitter achieves a precision of 99.9%. In this way, it is possible to split even poor-flowing materials, e.g. cement or limestone, with high precision. WIRSAM SCIENTIFIC JHB: (011) 482 1060 CPT: (021) 386 9020 DBN: (031) 709 0199 PE: (041) 365 2060 VT: (016) 931 1731 wirsamjb@wirsam.com www.wirsam.com
Product advantages: •
Sieving with circular sieving motion according to DIN 53477 • Easy operation, ergonomic design • Excellent separation efficiency even with short sieving times • Eieve stack up to 450mm height • Free digital adjustment of all process parameters (time, speed or sieve acceleration, interval) • Memory for up to 9 SOPs • Interval operation • Optional software EasySieve for control through RS232 serial interface, easy evaluation and documentation of results • Fulfils all criteria for measuring equipment related to ISO 9001 • Maintenance-free
Further features Applications: Separation, fractioning, particle size determination Field of application: Agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment / recycling, food, mining / geology / metallurgy, glass / ceramics, medicine / pharmaceuticals. Feed material: Powders, bulk materials
VERDER SCIENTIFIC
Extra details: The base plate of the AS 400
Tel: (010) 612 0141 sales@verder-scientific.co.za www.verder-scientific.com
Waring laboratory blenders For all your commercial blending needs WARING blenders were developed in 1937 as the world’s first commercially available blender, and since have become a world-wide brand leader in laboratory blending applications. Waring laboratory blenders are known for their innovations coupled with reliability and ease of use. New uses for the Waring laboratory blenders are constantly emerging across the range of scientific disciplines and are found in an array of laboratories. Waring blenders cover an array of applications in a variety of laboratories, with industries of all types (food, feed, micro, water, pharmaceutical, mining
Endecotts
The world’s finest analysis equipment by INSTRULAB FOR accurate, dependable results, there is no better test sieve on the market than Endecotts. Its many features and the quality of manufacture make it the perfect measuring instrument. Endecotts sieves not only look good but are designed and manufactured to offer qualities that make them extremely precise and accurate, whilst offering good handling, nesting and strength. Whether it is a standard test sieve, or something special for industries including diamond, coffee or agriculture, users will find the same meticulous quality in design and manufacture. Endecotts sieves are supplied in a complete range of aperture or diameter sizes, depths, choice of
control performs horizontal circular motions with a radius of 15mm (according to DIN 53477). The speed of 50 to 300rpm is electronically controlled. It is continuously adjustable to meet the requirements of the product to be sieved. The actual value of the number of revolutions is digitally displayed.
amongst others) using and relying on Waring to provide crucial steps in sample preparation, extractions, blending, grinding and pulverising applications. From the most basic blending applications to the most advanced and demanding of applications, Waring has a blender suited to any purpose - an explosion blender is one of the latest developments. The choices of blenders and vessels provide the customer with the opportunity to choose a personalised blender/vessel combination based on volume, speeds, jar types, application specific accessories and power requirements. There are a vast array of blenders and vessels available to ensure that the user’s choice matches the requirements. With a wide range of vessel volumes (from 10ml up to
materials and certified degrees of inspection, to meet virtually every requirement. Endecotts quality is guaranteed Each sieve is individually made under the most stringent quality control procedures using only the finest materials. The wire cloth is checked at every stage of manufacture either by optical projection or highly sophisticated computer scanning techniques. The final inspection is a precision measurement of apertures, and sieve frame dimensions. Only when the manufacturer is completely satisfied it meets their exacting standards is the sieve given an Endecotts certificate of conformity. Endecotts offer much more than a range of extremely high-quality sieves. The company’s expertise in sample analysis has enabled them to develop a wide range of shakers suitable for all types of sieving and samples: shakers designed to produce the optimum sieving action for fast reproducible results.
four litres), a wide range of speed settings (from single speed to pulsed variable speed) coupled with a broad range of specialised application controllability (from vessel cooling, dry pulverising, foam arresting amongst others) and timing functions. Waring blenders offer the laboratory the widest range of options to resolve any laboratory application. The Lenton team are proud to offer their services to the laboratory industry for the sales, support and repair of all Waring laboratory blenders. They look forward to assisting customers in choosing a blender that suits the purpose and application, and will gladly assist with any queries relating to the blender/vessel choice, servicing/repair requirements and application advice from their Johannesburg offices. LENTON LABORATORY & SCIENTIFIC EQUIPMENT Garth Davey Tel: (011) 476 4662 sales@lenton.co.za www.lenton.co.za
INSTRULAB - A DIVISION OF AIR & VACUUM TECHNOLOGIES 0861 VACTEC (822 832) info@vactech.co.za www.vactech.co.za