Singularities of map germs have long been studied, especially up to the equivalence under coordinate changes in both source and target. How to classify and how to recognise a given type ? Classification is well understood, with many good references in the literature. Previously the method used for recognition was firstly to normalize a given map germ and next to study its jet. For applications however, criteria of recognition singularities without involving normalization is more convenient. In this talk I shall give criteria for the recognition of singularities studied by David Mond.