Article number: 4019427720022 View all ökoNORM > View more: Pens & Pencils > Ökonorm - felt pens with erasers - 9 + 1 pcs. - secret writing The erasable felt pens 9+1 were rated "very good" in ÖKO-TEST issue 05/2010. They are particularly distinguished by their bright colours and write on almost all surfaces such as paper, cardboard, wood, etc. The colours can be quickly and easily removed from paper, skin and many objects with the erasers - so you can also use them as a secret ink that only becomes visible when painted over with the erasers. The specially shaped painting tip does not get stuck in the sleeve even under strong pressure. The colours are gluten-free and contain no gluten. The colours dry out at a rate of approximately 5% per month. They can be refreshed with 2 drops of lemon juice or vinegar on the colour pad. Open the back cap with pliers or a blunt knife. The specially designed paint tip cannot be pressed into the sleeve even under strong pressure. Note: Children under 3 years of age must be supervised by adults. The colours are washable and wipeable! Product specifications Felt pens with eraser - 9 pieces Item description Felt pens with eraser - 9 pieces Article number 4019427720022 Suitable for ages 4-7 years, 8-12 years Country of origin Germany The colours are water-based. They have only a slight odour, are formaldehyde-free and contain no harmful substances (pH value approx. 6). The colours are an aqueous emulsion with harmless colour pigments and the values are well below the Euronorm EN 71, Part 9. The pens dry out at approx. 5% per month, but can be refreshed with 2 drops of lemon juice or vinegar on the hint of colour. To do this, open the back cap with pliers or a blunt knife. Colours Yellow, Orange, Pink, Black, Green, Blue, Purple, Brown, Black, White (Rubber) Ingredients: The ink contains glycerine, liquid paraffin and non-toxic colour pigments. European standard EN 71/9, American standard ASTM D 4236. The ink is an aqueous emulsion with non-toxic colour pigments. The colours are gluten-free. They comply with the European standard EN 71/1-2-3-9 and the American standard ASTM D 4236 for the safety of children's toys. Note: Children under 3 years of age must be supervised by adults. The colours are washable!