Knight Farm Machinery used the 2014 LAMMA Show to announce that Category 4 cabs, giving drivers the highest standard of protection against hazardous substances, would be available on its self-propelled sprayers. Knight is the only UK sprayer manufacturer offering this option.The standard of protection against hazardous substances provided to drivers of tractors and self-propelled sprayers is classified within European Standard EN 15695. Category 1 provides no protection, category 2 protects against dust, category 3 protects against dust and aerosols, and category 4 prevents vapours, dust and aerosols entering the cab.The category 4 cabs being offered by Knight have multi-stage filtration and are pressurised to ensure there is no access for air and contaminants other than through the filters. In other respects cab design is not changed, and comfort and convenience remain excellent.LAMMA also gave farmers and contractors the first opportunity of the year to take a close look at Knight’s expanded range of cultivators, including Bednar machines from the Czech Republic, for which the company is the sole UK importer. A Swifterdisc multi-purpose cultivator, available up to 14 metres wide, and a Fenix FO with working widths from four to seven metres were both on display.