{"title":"Methylene blue","description":"\u003cp\u003e\u003cstrong\u003eMethylene blue\u003c\/strong\u003e (methylthioninium chloride, CAS 61-73-4) is a classic dye for staining in microscopy and teaching practicals. We offer it ready to use and as a powder for preparing your own solutions.\u003c\/p\u003e\u003ch2\u003eSizes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-de\/products\/azul-metileno-1-cuentagotas-tecnico\"\u003eMethylene blue 1 % with pipette\u003c\/a\u003e: 100 ml to 1 L.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-de\/products\/azul-de-metileno-en-polvo\"\u003eMethylene blue powder\u003c\/a\u003e: 2 g and 5 g tubes.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-de\/products\/azul-de-metileno-en-polvo-1-kg\"\u003eMethylene blue powder 1 kg\u003c\/a\u003e for formulators and distributors.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-de\/products\/kit-tincion-azul-de-metileno-1-100-ml-lugol-2-100-ml\"\u003eStaining Pack\u003c\/a\u003e: methylene blue 1 % + \u003ca href=\"\/en-de\/collections\/lugol-2\"\u003eLugol 2 %\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt stains fabrics and surfaces intensely: work with gloves.\u003c\/p\u003e\u003cp\u003eShipped from Spain. Shipping costs are calculated at checkout and delivery times depend on the destination and carrier. VAT invoice on every order.\u003c\/p\u003e","products":[{"product_id":"azul-metileno-1-cuentagotas-tecnico","title":"Methylene blue 1% – Aqueous solution with dropper, microscopy stain (100 ml to 1 L)","description":"\u003cp\u003e\u003cstrong\u003eMethylene blue 1% by Aquapurelife\u003c\/strong\u003e is a ready-to-use aqueous solution of the dye methylene blue (CAS 61-73-4), a standard choice for staining microscopy slides. It comes in glass with a dropper pipette for precise, spill-free dispensing.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMethylene blue (methylthioninium chloride)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConcentration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1% aqueous solution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCAS No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e61-73-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAppearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDeep blue liquid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGlass with dropper pipette\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eTechnical uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStaining of microscopy slides\u003c\/li\u003e\n\u003cli\u003eTeaching and practical classes\u003c\/li\u003e\n\u003cli\u003eRedox indicator in educational experiments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eContents and packaging\u003c\/h2\u003e\u003cp\u003eSizes of 100 ml, 125 ml, 250 ml, 500 ml and 1 litre. Made and packed in Spain.\u003c\/p\u003e\u003ch2\u003eWhat is methylene blue?\u003c\/h2\u003e\u003cp\u003eMethylene blue (methylthioninium chloride) is a deep blue synthetic dye, used since the 19th century for staining microscopy slides, as a redox indicator and in teaching practicals.\u003c\/p\u003e\u003ch2\u003eOther formats\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-de\/products\/azul-de-metileno-en-polvo\"\u003eMethylene blue powder\u003c\/a\u003e in 2 g and 5 g.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-de\/products\/azul-de-metileno-en-polvo-1-kg\"\u003e1 kg professional format\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-de\/products\/kit-tincion-azul-de-metileno-1-100-ml-lugol-2-100-ml\"\u003eStaining Pack\u003c\/a\u003e with \u003ca href=\"\/en-de\/products\/lugol-2\"\u003eLugol's solution 2%\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eIs it the same product you sell on Amazon?\u003c\/h3\u003e\u003cp\u003eYes, same batch and same label.\u003c\/p\u003e\u003ch3\u003eDoes it stain permanently?\u003c\/h3\u003e\u003cp\u003eOn fabrics and porous surfaces, yes. Wear gloves and protect your work area.\u003c\/p\u003e\u003ch2\u003eSafety and responsible use\u003c\/h2\u003e\u003cp\u003eKeep out of reach of children. Sale restricted to adults (18+). Handle with gloves in a well-ventilated area. Safety data sheet (SDS) available on request.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEU responsible person:\u003c\/strong\u003e GRUPO SETEYTE SLU · Carril de los Pamies 1, 30130 Beniel (Murcia), Spain · NIF B73935769.\u003c\/p\u003e","brand":"GaiaVitae","offers":[{"title":"100 ml","offer_id":51453232513357,"sku":"metil-2","price":16.89,"currency_code":"EUR","in_stock":true},{"title":"125 ml","offer_id":51659423023437,"sku":"","price":22.69,"currency_code":"EUR","in_stock":true},{"title":"250 ml","offer_id":51659423056205,"sku":"","price":29.55,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":51659423088973,"sku":"","price":49.69,"currency_code":"EUR","in_stock":true},{"title":"1 litre","offer_id":51659423121741,"sku":"","price":74.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/7589\/0509\/files\/100.png?v=1790943336"},{"product_id":"azul-de-metileno-en-polvo","title":"Methylene blue powder – Sealed 2 g and 5 g tube (CAS 61-73-4)","description":"\u003cp\u003e\u003cstrong\u003eAquapurelife methylene blue powder\u003c\/strong\u003e: methylthioninium chloride (CAS 61-73-4) in a sealed rigid plastic tube. A compact format for preparing solutions at the concentration you need.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMethylene blue (methylthioninium chloride)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCAS No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e61-73-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAppearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDark green crystalline powder with a metallic sheen; intense blue in solution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSealed plastic tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eTechnical uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePreparation of staining solutions for microscopy\u003c\/li\u003e\n\u003cli\u003eRedox indicator and dye in education\u003c\/li\u003e\n\u003cli\u003eTechnical dye\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eContents and packaging\u003c\/h2\u003e\u003cp\u003e2 g and 5 g tubes. For 1 kg, see the professional size.\u003c\/p\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eHow much 1 % solution can I make?\u003c\/h3\u003e\u003cp\u003e5 g makes 500 ml of 1 % solution (5 g in 500 ml of purified water).\u003c\/p\u003e\u003ch3\u003eDoes it stain?\u003c\/h3\u003e\u003cp\u003eYes, intensely. Wear gloves and protect the work area.\u003c\/p\u003e\u003ch2\u003eSafety and responsible use\u003c\/h2\u003e\u003cp\u003eKeep out of the reach of children. Sale restricted to adults (18+). Handle with gloves in a ventilated area. Safety data sheet (SDS) available on request.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEU responsible person:\u003c\/strong\u003e GRUPO SETEYTE SLU · Carril de los Pamies 1, 30130 Beniel (Murcia), Spain · NIF B73935769.\u003c\/p\u003e","brand":"GaiaVitae","offers":[{"title":"2 g","offer_id":51453054026061,"sku":"","price":30.1,"currency_code":"EUR","in_stock":true},{"title":"5 g","offer_id":51453054058829,"sku":"","price":68.2,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/7589\/0509\/files\/GAIA-AZUL_DE_METILENO_100_ml_2.png?v=1778672895"},{"product_id":"azul-de-metileno-en-polvo-1-kg","title":"Methylene blue powder – 1 kg professional size (CAS 61-73-4)","description":"\u003cp\u003e\u003cstrong\u003eMethylene blue powder, 1 kg\u003c\/strong\u003e: methylthioninium chloride (CAS 61-73-4) in a 1 kg professional container, aimed at formulators, training centres and distributors.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMethylene blue (methylthioninium chloride)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCAS No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e61-73-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackaging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOpaque airtight jar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eTechnical uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePreparation of staining solutions on a large scale\u003c\/li\u003e\n\u003cli\u003eTechnical supply and formulation\u003c\/li\u003e\n\u003cli\u003eResale in smaller sizes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eContents and packaging\u003c\/h2\u003e\u003cp\u003eOne 1 kg airtight jar. Keep closed, dry and protected from light.\u003c\/p\u003e\u003ch2\u003eA size designed for volume\u003c\/h2\u003e\u003cp\u003eMethylene blue is a classic dye used in staining and teaching microscopy. As a powder it packs the maximum amount of product into the minimum space: from this jar you can prepare large quantities of aqueous solution at whatever concentration each process requires. It is the right size for those who prepare their own staining solutions, for training centres with continuous consumption and for distributors who repack into smaller containers.\u003c\/p\u003e\u003ch2\u003eSizes and alternatives\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall powder size\u003c\/strong\u003e: \u003ca href=\"\/en-de\/products\/azul-de-metileno-en-polvo\"\u003esealed 2 g and 5 g tube\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlready dissolved\u003c\/strong\u003e: \u003ca href=\"\/en-de\/products\/azul-metileno-1-cuentagotas-tecnico\"\u003emethylene blue 1 % aqueous solution\u003c\/a\u003e with pipette.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor staining\u003c\/strong\u003e: \u003ca href=\"\/en-de\/products\/kit-tincion-azul-de-metileno-1-100-ml-lugol-2-100-ml\"\u003eStaining Pack with methylene blue 1 % and Lugol 2 %\u003c\/a\u003e and \u003ca href=\"\/en-de\/collections\/lugol-2\"\u003eLugol 2 %\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainers for repacking\u003c\/strong\u003e: \u003ca href=\"\/en-de\/products\/botella-ambar-tapon-dosificador\"\u003eamber glass bottle with dispensing cap\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eThe full range in the \u003ca href=\"\/en-de\/collections\/azul-metileno\"\u003emethylene blue\u003c\/a\u003e collection and in \u003ca href=\"\/en-de\/collections\/b2b-y-granel\"\u003eB2B and bulk\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eStorage and handling\u003c\/h2\u003e\u003cp\u003eKeep the jar tightly closed, in a dry, cool place protected from light. It is a very intense dye: handle it with gloves, avoid raising dust and protect surfaces, as it stains skin, fabrics and many materials.\u003c\/p\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eHow much 1 % solution does 1 kg make?\u003c\/h3\u003e\u003cp\u003e100 litres of 1 % solution.\u003c\/p\u003e\u003ch3\u003eHow should it be stored once opened?\u003c\/h3\u003e\u003cp\u003eClosed after each use, in a dry place protected from light. Moisture cakes the powder, so always use dry utensils.\u003c\/p\u003e\u003ch3\u003eDo you issue invoices with VAT shown separately?\u003c\/h3\u003e\u003cp\u003eYes, on every order. It is shipped from Spain in protective packaging.\u003c\/p\u003e\u003ch2\u003eSafety and responsible use\u003c\/h2\u003e\u003cp\u003eKeep out of the reach of children. Sale restricted to adults (18+). Handle with gloves in a ventilated area. Safety data sheet (SDS) available on request.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEU responsible person:\u003c\/strong\u003e GRUPO SETEYTE SLU · Carril de los Pamies 1, 30130 Beniel (Murcia), Spain · NIF B73935769.\u003c\/p\u003e","brand":"aquapurelife","offers":[{"title":"Default Title","offer_id":53935470936397,"sku":null,"price":589.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/7589\/0509\/files\/ChatGPTImage18may2026_18_33_46.png?v=1779122080"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/7589\/0509\/collections\/100.png?v=1790943957","url":"https:\/\/aquapurelife.es\/en-de\/collections\/azul-metileno.oembed","provider":"Aquapurelife","version":"1.0","type":"link"}