According to the World Health Organization pesticide poisoning is a major health problem due to the millions of cases annually occurring worldwide. Farmers have a particularly high risk of pesticide poisoning because of their work involving pesticide use to protect crops. The majority of pesticide poisonings occur in developing countries. On a short term it is not realistic to reduce farmers' use of pesticides significantly because it would require that secure and cost-effective alternatives are introduced. This is a lengthy process, which should undoubtedly be supported. However, it becomes as important to make sure that farmers can protect themselves from pesticide exposure meanwhile. Use of personal protective equipment can minimize pesticide exposure on farmers' bodies and consequently reduce their risk of pesticide poisoning. However, the sparse research identified through a systematic literature review shows that we are not in a position to give recommendations on what personal protective equipment farmers should protect themselves with against pesticide exposure suitable to their specific conditions. The purpose of the present study is to examine factors that influence farmers' use of personal protective equipment during their work with organophosphates and, based on this examine the ability of locally adapted personal protective equipment to reduce their organophosphate exposure. The hypothesis is that farmers working in locally adapted personal protective equipment have less acute organophosphate poisoning symptoms, a higher plasma cholinesterase level and find it to be a more feasible solution than farmers working in their daily practice wearing. Examining how locally adapted personal protective equipment (onwards referred to as the LAPPE solution) performs in practice implies testing it in an intervention study. A randomized crossover experiment design is chosen partly because fewer farmers have to be recruited since each farmer will act as his own control and partly because the between farmer variation is strongly reduced. The performance of the LAPPE solution will be tested in one experiment and compared to the performance of the same farmers' daily practice wearing (onwards referred to as the DP solution) in another experiment. The LAPPE solution is expected to have a superior performance. The participation sequence (LAPPE/DP or DP/LAPPE) will be randomized. The study will be conducted among farmers in Chitwan, Nepal.