Chromatography is a fairly effective method of analysis and separation of complex substances, which is constantly being improved and developed.
The invention of the chromatograph can be safely attributed to the most important discoveries of the last century. Over the years, the device has been improved several times, changing its way of working and design. Only the main principle of its operation remained unchanged – the device divides the mixture into separate substances, and then determines their belonging. Continue reading
Backhoe loaders are considered a universal technique. They are practical and multifunctional. Such an excavator has two buckets.
The front has a sufficiently large carrying capacity and is designed for loading. The rear bucket is used for digging trenches and pits. Excavators loaders perfectly proved during the work in difficult conditions. They are used for snow removal, construction of cottages, digging pits and more. Continue reading