![]() ![]() Next, always make sure you shuffle all the cards before each new session begins. After the test, you’ll add in photographs of the card sorts or spreadsheets with recorded numbers. You’ll also want to create a file on your computer for each card sorting session so that you can start compiling a complete overview of the sitemap the users are creating. This way you can demonstrate the relationship between the cards easily for quick and efficient analysis. When setting up a paper card sorting test, consider using a spreadsheet and marking each card with a number on the reverse side of the name. The reason for this was that he wanted users to first take all the topic cards and sort them into groups that they perceived as logical. So to get to the bottom of the issue, he decided to carry out both an open and closed card sorting test. It turns out that what the store owners originally meant with that was bulk purchases. And he wasn’t alone in that: none of the people he’d spoken to that day understood what it meant either. To get to the bottom of this issue, Jessie took a look at the site and found some strange labels that he didn’t understand, such as Books By The Foot. The customers in the store that he interviewed said that they definitely preferred coming in for the real-life experience over using the website to shop the written word. The reason he carried out this test was because it was one of the most popular stores in the city, but the website definitely didn’t share in that popularity. Simple controls and careful attention to operator safety mean that the xSORT can be used by non-specialist personnel.A UXer called Jessie Altman carried out card sorting for The Strand Bookstore in New York city. Its battery powered convenience makes it the ideal tool for “On the Spot” field analysis.Ī miniaturised low power (40kV) X-ray tube, and an advanced Silicon Drift Detector combine to give exceptional stability, precision and speed of analysis for a hand-held XRF. In this case, the xSORT can be coupled with its Docking Station, effectively converting the instrument into a compact, transportable benchtop XRF system. Pressed pellets), thereby reducing packing density issues. For enhanced analytical accuracy, samples may be prepared in the traditional way for XRF analysis (as The instrument is robust, with a shockresistant ABS plastic housing. The user interface and results are displayed on an optimally integrated PDA. Results are typically available in 30 seconds. ![]() ![]() ![]() All that is necessary to carry out an analysis is to point the instrument in contact with the surface of the test sample and press the trigger. Complete with battery pack, the Spectro x-SORT weighs less than 4 pounds (1.7kg) and has an ergonomically designed handle and grip. The xSORT is exceptionally convenient to use for on-site screening measurements. The calibration procedure used by the xSORT is based on the successful calibration models utilised in Spectro’s laboratory instruments and can be applied with confidence to the analysis of completely unknown samples. Using the simple sampling procedures described in EN 15309, this small, hand-held instrument gave good agreement with inter-laboratory ‘round robin’ results on samples like contaminated soil, fly ash and Ewaste. Laboratory analysis by X-ray Fluorescence Spectrometry has been an accepted technique for the analysis of such materials for many years and was given official approval by European Standard EN 15309:2007. The new xSORT hand-held XRF spectrometer from Spectro Analytical Instruments can achieve laboratory-quality analysis on soil and waste samples. ![]()
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