Balances, Moisture Analysers & Density Meters


Tips for Moisture Measurement using Karl Fischer Titration


Karl Fischer titration is an analytical technique used to quantify a sample’s water content using a highly selective chemical reaction. First popularised in the mid-20th century, Karl Fischer titration has become widely applied in the quality control of petroleum, industrial chemicals, pharmaceuticals, and the like. It is also used in the R&D of substances related to the development of new materials and energy alternatives.


In Karl Fischer titration, water is extracted from a sample preparation and measured after a subsequent chemical reaction. Samples, whether in liquid, gas, powder, or pellet form, are all easy to measure with high precision. However, caution must be observed for both the pH of the Karl Fischer reaction, and for the use of samples containing substances known to interfere with it.


The ideal pH range to conduct Karl Fischer reactions is pH5.5 to pH8. The lower the pH, the slower the reaction proceeds, whereas reactions performed at too high a pH tend to generate side reactions. Measurement in both situations invites the possibility of significant measurement errors. KEM suggest adding neutralising agents such as imidazole and salicylic acid to highly acidic and highly basic samples respectively, making sure to adjust the pH of the sample-containing Karl Fischer reagent in the measurement cell.


False positive errors may occur with samples containing ketones because they produce water after reacting with alcohols such as methanol present in some Karl Fischer reagents, so please use a Karl Fischer reagent designed for use with ketones.


With analysis requiring chemical reactions, it is crucial to know the chemical composition and characteristics of your sample in advance. If you have questions regarding Karl Fischer moisture titration, please contact KEM’s friendly consultants.


More information online: ilmt.co/PL/WeYM and ilmt.co/PL/ebxb Precise Density Analysis of Food Powders


The Ultrapyc series is the most accurate and precise automated density analyser for various sample types including solids, powders and semi-solids. These measurements enable producers to optimise the powder’s packaging process via determining volume filling characteristics.


The Ultrapyc series offers the choice of expansion direction and a new PowderProtect mode, which enables reverse gas expansion. This mode eliminates contamination for fine powders. These instruments also have built-in Peltier temperature control with a wide temperature range (15°C to 50°C) and are flexible when it comes to sample measurement capabilities. The new Ultrapyc series represents a significant step forward in user- friendliness and makes accurate density analysis easier than ever before.


Anton Paar’s new e-book, the ‘Field Guide to Food Powder Characterization’, explains how Anton Paar’s portfolio of analytical instrumentation helps you deepen your understanding of food powder characteristics and production process steps such as packaging.


Download a copy of the e-book: ilmt.co/PL/8j3o More information online: ilmt.co/PL/Z48O


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Precision Balances Now Offer IP65 Protection


Precisa Gravimetrics AG is proud to announce it has attained the IP65 Rating for its Series 520 PB Balances (C, D, and G models).


The IP65 rating ensures that the electrical enclosure of the 520 PB, C, D, and G balances remains shielded from dust, moisture, and liquids. These balances are engineered to withstand particle contamination and low-pressure water jets, making them ideal for deployment in humid environments or areas with vapour or water exposure. This development is particularly advantageous for the food production industry.


Steffen Wander, CEO of Precisa Gravimetrics AG, remarked: “We are delighted to announce this additional certification for our Series 520 Precision Balances, further underlining our unwavering commitment to delivering quality assurance to our valued customers.”


More information online: ilmt.co/PL/9jjB 61154pr@reply-direct.com


Extended Warranty on Scales from 2023


Leading UK weighing scale and balance manufacturer Adam Equipment is extending the warranty periods of its products to as much as five years in a move to demonstrate the quality and durability of its products.


Effective from January 2023, Adam’s new warranties will apply to all new purchases from that point. “Extending many products to a five-year warranty will put the Adam brand ahead of just about any other scale or balance manufacturer you can think of.” said CEO Richard Storey.


Richard continued: “Our previous warranty structure, whilst in line with much of the weighing industry, didn’t reflect the confidence we have in the quality and durability of Adam products. “So, we did some research. We’ve spoken to customers, some who have had an Adam scale or balance for 10, 15 years or more and it’s still going strong. “We know Adam products will outlast the average scale or balance - so we don’t think they should have an average scale or balance warranty.


“Warranty gives you peace of mind, peace of mind that we will stand by the investment you make and that the quality and durability of our products’ performance allows you to weigh better for longer.”


To take advantage of the new, longer warranty periods, buyers only need to register their product on Adam’s website upon purchase. Should they experience any issues with parts or workmanship, the buyer would contact either their local Adam office or the authorised reseller who they bought the product from by telephone or email to start the streamlined claim process.


“We’ve been in this industry for 50 years and our customers know that the Adam brand means quality,” said Richard. “We’re excited that our new warranties promise new customers that they can trust Adam for their weighing needs - with double the peace of mind compared to our old warranty periods in many cases.” Adam Equipment, which celebrated its 50th birthday in 2022, is making the new warranty periods available worldwide, via its offices in the UK, Germany, USA, South Africa, Australia and China. Find out details on the new warranty program: ilmt.co/PL/RrQg More information online: ilmt.co/PL/YvJo


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