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New Refractometer Enables Confident Quality Assurance and Control Testing of Orange Juice
For many years, beverage manufacturers have adopted digital refractometers as their primary instrument for measuring the final dilution ratio (°Brix) of re-constituted fruit juice not only to assure product quality but also in an attempt to reduce losses by tightly controlling concentrate yields. For most fruit types this has been successful but for one of the most commonly produced juices, the high accuracy measurement achieved by latest technology digital refractometers has unmasked an erratic behaviour within an orange juice sample that prevents tighter dilution control, which in turn negates any opportunity of cost reduction by way of lowering target values without the risk of compromising minimum specifications defined by regulation.
Over the past two years, leading refractometer manufacturer and xylem company Bellingham + Stanley® has been working
alongside a major fruit juice producer in order to develop an instrument that can achieve the same high accuracy results for orange juice samples as it can for other fruit based juices. By focussing on the practical handling of the sample prior to high accuracy measurement, Bellingham + Stanley has designed the Pro-Juice Refractometer based it’s the World leading RFM340+ refractometer to offer a measurement accuracy of 0.01 °Brix for sucrose solutions and more importantly, a reproducibility of 0.02 °Brix between orange juice samples, regardless of temperature deviation or operator skill level.
MORE INFO. 155
New Fully Automated Dumas Nitrogen/Protein Analyser
Velp Scientifica presents the NDA 701 Dumas Nitrogen Analyser, extending its range of instruments dedicated to sample preparation and analysis in the food and feed industries.
The NDA 701 uses high-technology to optimise productivity. With the highest limits of detection and readability on the market and an RSD lower than 0.5% for EDTA, the user is assured of high precision results. Samples can be loaded in nearly 120 positions, using the same loading procedure whether solid, paste or liquid. Once loaded, the unit runs fully automatically offering exceptional reproducibility and comparability of results.
The DUMASoftTM software presents the program parameters, run conditions and results on a single screen of your PC making operation quick and simple.
Different calibration curves can be created and managed and an on-board database containing methods for numerous sample types and different nitrogen standards can be used to optimise analysis of specific samples. Data can be shown via on-board versatile reporting with output to a PC or LIMS in .xls, .txt or .csv formats for manipulation using the operator’s preferred software.
Velp Scientifica NDA 701 complies with all standards in the food and feed markets – AOAC, AACC, ASBC, OIV and ISO – making it the ideal choice for industrial and monitoring laboratories.
MORE INFO. 156 ADVERTORIAL Precision Instruments for Water Activity Measurement
For over 50 years Novasina is the leader in the production of precision instruments for water activity measurement in foodstuff, processed food as well as pharmaceutical, chemical products and cosmetics.
Thanks to a longstanding experience and research and development we are able to offer today reliable, high quality ‘Swiss made’ products that set new standards in the water activity measurement.
Novasina offers three types of water activity meters, carefully developed and designed: • LabSwift: portable aw-meter without any temperature control, thus environmental (lab) temperature is the measurement temperature. Suitable for low to medium aw-measurement ranges
• LabTouch: Semi-temperature controlled measurement chamber, optimised for the measurement of aw values in the range of 0.6aw - 0.90aw
• LabMaster: High-end instrument with full temperature-controlled chamber. It can handle all types of samples from 0.04aw to 1.00aw.
MORE INFO. 157
Why different models?
Because every sample has its own characteristics in terms of ingredients, texture, colour and taste and thereby influences the free water and finally the water activity in a different way. This factor plus the temperature influence defines the measurement time and the accuracy of the same. Stable measurement conditions are finally the key to a successful quality control! As a consequence, three different models are required being capable to always offer the most suitable solution to customers samples and requirements.
Talk to a Novasina expert to learn more how your sample's water activity can be measured and your product quality improved.
MORE INFO. 158 MORE INFO. 159
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