22 Issue 4 2020
mining
sieves
Efficient weighing of precious metal samples
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ettler Toledo’s XPR micro and ultra-micro balances, characterised by low repeatability and short stabilisation time, ensure fast and reliable weighing of precious metal samples for fire assay applications. A specially designed funnel set allows accurate weighing of even the smallest samples, such as prill and regulus, in a very short time. Simple, safe & secure The XPR micro and ultra-micro balances incorporate a range of innovative technologies to deliver the highest accuracy in their class and ensure microweighing tasks are simpler, safer and more secure. XPR provides a welcome combination of usability and accuracy that is critical in laboratories where small samples have to be quickly and reliably weighed. Outstanding weighing performance XPR microbalances offer outstanding weighing performance on a very small
compact footprint thanks to the patented active temperature controlling system (ATC) and tolerance profiles which guarantee traceable results. The built-in GWP (Good Weighing Practice) approved quality assurance function actively monitors the balance status and ensures all results are consistent within specifications. Unique features The SmartView terminal mounted directly on the weighing unit is unique and optimises the ergonomics of weighing small samples. The draft shield design concept makes cleaning easy. Moreover, touch-free sensors reduce the risk of cross-contamination. Efficient processes The modern balance software with the new interface is as easy to use as a smartphone. Data entry for tasks and settings is fast and easy. The capacitive touchscreen allows one to ‘swipe’ through settings, applications and methods. The XPR has a new method concept: when a weighing process is performed, the parameters used are automatically stored in the built-in notepad. This means that task methods can be stored in the method library and quickly accessed, which saves time and provides higher process security. MICROSEP (PTY) LTD Elisha Ramlal Tel: (011) 553 2300 Fax: (011) 553 2400 elisha.ramlal@microsep.co.za www.microsep.co.za
Fight the COVID-19 crisis with an automated system from Metrohm
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utomation of routine Fe, Cr and other elemental titrations is now a breeze with the wide range of possibilities offered by Metrohm’s automated sample processor systems. From the basic 848/869 Titropackage to the top-of-the-range 855 Robotic Titrosamplers, Metrohm has something for every budget. The 855 represents automation of titration processes of up to 140 samples on the smallest footprint ever. The operator simply loads the carousel and leaves the system to run. This reduces contact with other staff. Productivity cannot afford to suffer as labs resort to shift operations to minimise staff numbers in a given shift. This is where automation is so valuable. No matter the level of the shift worker, Metrohm automated solutions are user-friendly and reliable.
For those labs whose final samples are in excess of 400ml after digestion, Metrohm has customised sample racks that can easily accommodate 600ml / 800ml beakers. In this way accuracy and safety are enhanced. Further operator safety is achieved by the automatic removal of acidic waste solutions as soon as the titration is complete. This is achieved with Metrohm’s low-maintenance peristaltic pumps. Metrohm automation solutions improve laboratory efficiency, enhance the reliability of results, improve analyst safety and aid in the fight against COVID-19.
METROHM SA (PTY) LTD Tel: (011) 656 1918 CPT: (021) 852 0213 DBN: (031) 265 0067 Fax: (011) 656 2698 076 643 7113 info@metrohm.co.za www.metrohm.co.za
Fritsch German engineering at its best – everything you need for all types of sieving
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he Fritsch sieve range is the focussed answer to all typical sieving tasks in the laboratory with its Analysette 3 Pro and Spartan and the Analysette 18 for dry and wet sieving from 20g up to 15kg. Using the Fritsch Vibratory Sieve Shaker Analysette 3 Pro, micro-precision sieving is also possible (measuring range 5µm – 100µm, max. sample quantity approx. 0.05 – 0.5g). These three well-conceived instruments can be used for every application to make tasks simpler and faster using the easy to operate, reliable and long-lasting features. The extensive accessories and the modified analysis software Autosieve is supplied free of charge as a test version for 90 days. Analysette 3 Pro - Precise sieving with automatic amplitude control The high-performance vibratory sieve shaker Analysette 3 Pro offers everything you need for fast determination of quantitative particle size distribution in the laboratory. As a shaking sieve system with an electromagnetic drive oscillates the sieve stack into regulated vertical oscillations, it is the ideal solution for sieving sample quantities up to 2kg and a measurement range from 5μm to 63mm. The Analysette 3 Pro is perfectly suited for fast quality control of incoming and outgoing products, offers user-friendly
Quick & easy sieve analysis
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ieve analysis is an important procedure undertaken in many industries to assess the particle size distribution of granular material. This straightforward process is important to ensure sieves are weighed correctly and results are recorded without error. One Click sieve analysis Mettler Toledo’s One Click sieve analysis is a complete solution for determining particle size distribution consisting of LabX software and an appropriate balance. LabX software provides clear step-by-step instructions on the balance, and automatically takes care of all data and calculations. The complete solution can be tailored to match individual process requirements. Handling the sieves is easy Simply start the method with the One Click shortcut on the balance touchscreen. Using automatic weight detection, sieves can be weighed consecutively without needing to touch a button. Clear instructions are given on the balance
operation and is low-noise, robust and long-lasting. Analysette 3 Spartan - Simple sieving for all tasks The little sister of the Analysette 3 Pro is used for all typical sieving tasks in the laboratory with optical adjustment of the amplitude on the running instrument. It comes complete with the practical Fritsch sieve stack tensioning system Easytwist and the possibility of automatic evaluation of the sieve analysis using the extensive Fritsch evaluation software Autosieve. Effective sieving of large quantities The Analysette 18 is the robust, heavy duty analytical sieve shaker from Fritsch. It can effortlessly sieve up to 15kg of material between 20μm and 125mm. Due to three-dimensional sieving action, the sieving material is not only accelerated vertically, but also horizontally, and ensures a permanent change of direction of the material. For especially fast sieving results without manual re-sieving and optimal reproducibility.
LABOTEC (PTY) LTD JHB: (011) 315 5434 CPT: (021) 531 7660 DBN: (031) 566 4870 Fax: (011) 315 5882 sales@labotec.co.za www.labotec.co.za
touchscreen in order to ensure the sieves are placed in the correct order. Automatic calculation of results No manual transcription is required as the sieve analysis procedure automatically records the sieve weights, the sample weight and the fractional sample weights. The user only needs to enter the sample ID into the balance. All calculations are performed automatically. One Click sieve analysis automatically determines the distribution percentage and displays the results on the balance with the mean particle size. Results can be printed at any time in a customised report to meet documentation requirements. The whole process is fast, easy and error-free. The method is easily customised to provide the effective size or the uniformity coefficient. With results calculated automatically as part of the procedure, users can quickly classify the aggregate for use. Easily integrated with LIMS or other internal systems, results can be archived for quality control measures. MICROSEP (PTY) LTD Elisha Ramlal Tel: (011) 553 2300 Fax: (011) 553 2400 elisha.ramlal@microsep.co.za www.microsep.co.za
