{"product_id":"spray-indicator-dye-blue-1-litre","title":"Spray Indicator Dye, Food Grade Blue, 1 Litre, for Knapsack and Boom Sprayers","description":"\u003cp\u003eWhen you spray a clear liquid across a path, lawn or paddock, it is hard to see where you have been. Spray indicator dye solves that. This is a food grade blue dye mixed into the spray tank with your herbicide, pesticide, fungicide, insecticide, moss killer or liquid fertiliser. It temporarily colours the treated area blue, so you can see exactly what has been covered. You avoid missed strips and double doses, which wastes product and can damage plants. It comes in a 1 litre bottle and can be used all year round. Groundskeepers, sports turf managers, landscapers, farmers, spraying contractors and council teams use it with knapsack and boom sprayers.\u003c\/p\u003e\n\n\u003ch2\u003eWhy it works\u003c\/h2\u003e\n\n\u003ch3\u003eSee every pass\u003c\/h3\u003e\n\u003cp\u003eClear sprays dry invisible within minutes. A blue marker shows the edge of each pass, so you can line up the next one without gaps or overlaps. That improves accuracy on large areas, awkward shapes and hard surfaces with weeds in the joints.\u003c\/p\u003e\n\n\u003ch3\u003eTemporary by design\u003c\/h3\u003e\n\u003cp\u003eThe supplier states the treated area stays blue for a few days, depending on the surface. It then fades in sunlight or washes away with rain, so lawns and paths return to normal on their own.\u003c\/p\u003e\n\n\u003ch3\u003eWorks with most liquid treatments\u003c\/h3\u003e\n\u003cp\u003eThe dye is mixed straight into the spray tank. The supplier lists use with liquid herbicides, pesticides, fungicides, insecticides, moss killers and liquid fertilisers.\u003c\/p\u003e\n\n\u003ch3\u003eSmall dose, big coverage\u003c\/h3\u003e\n\u003cp\u003eThrough a boom sprayer, the supplier's rate is 1 to 2 litres per hectare, so one bottle covers up to 10,000m² at the lower rate. In a knapsack sprayer, use 12.5ml to 30ml per 10 litres of water. Use up to 50ml on surfaces where a stronger colour is needed.\u003c\/p\u003e\n\n\u003ch2\u003eWhere it's used\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHard surfaces, paths, driveways and car parks\u003c\/li\u003e\n\u003cli\u003eLawns, sports turf and amenity grass\u003c\/li\u003e\n\u003cli\u003ePaddocks and pasture\u003c\/li\u003e\n\u003cli\u003eAround trees, shrubs and ornamentals\u003c\/li\u003e\n\u003cli\u003eArtificial surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eSpray indicator dye\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActive ingredient\u003c\/td\u003e\n\u003ctd\u003eFood grade dye\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack size\u003c\/td\u003e\n\u003ctd\u003e1 litre bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKnapsack rate\u003c\/td\u003e\n\u003ctd\u003e12.5ml to 30ml per 10L water (up to 50ml depending on surface)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoom sprayer rate\u003c\/td\u003e\n\u003ctd\u003e1 to 2L per hectare\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoverage\u003c\/td\u003e\n\u003ctd\u003eUp to 10,000m² (1 hectare)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisible for\u003c\/td\u003e\n\u003ctd\u003eA few days, depending on surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeriod of use\u003c\/td\u003e\n\u003ctd\u003eAll year round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eChoosing the right option\u003c\/h2\u003e\n\u003cp\u003eThis listing is a single 1 litre bottle. The choice is how many bottles your season needs.\u003c\/p\u003e\n\u003cp\u003eFor \u003cstrong\u003eknapsack spraying\u003c\/strong\u003e, one litre makes between about 330 and 800 litres of spray mix at 12.5ml to 30ml per 10 litres. That is 20 to 50 fills of a 16 litre knapsack. Use the lower rate on lawns and grass, where blue shows clearly. Use the higher rate on dark tarmac or block paving.\u003c\/p\u003e\n\u003cp\u003eFor \u003cstrong\u003eboom spraying\u003c\/strong\u003e, allow 1 to 2 litres per hectare. A sports field or paddock of about one hectare needs one or two bottles per application.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation, use \u0026amp; care\u003c\/h2\u003e\n\u003cp\u003eAlways read the product label before use, and the label of the product you are mixing it with. Half fill the sprayer with water, add the main product and the dye at the stated rate, then top up and mix. Wear gloves, as the dye can stain skin. Keep it off surfaces you do not want temporarily coloured, such as render, timber or clothing. Store the bottle sealed, upright and out of reach of children.\u003c\/p\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWill it stain my patio permanently?\u003c\/h3\u003e\n\u003cp\u003eThe supplier states it stays blue for a few days, then fades with sunlight or washes away with rain. How long it lasts depends on the surface.\u003c\/p\u003e\n\u003ch3\u003eIs it harmful to grass?\u003c\/h3\u003e\n\u003cp\u003eThe supplier lists it for lawns, sports turf, new grass, paddocks and pasture, and describes it as non-toxic.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with fertiliser?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplier lists liquid fertilisers among the products it can be mixed with.\u003c\/p\u003e\n\u003ch3\u003eDo I need gloves?\u003c\/h3\u003e\n\u003cp\u003eYes. Wear gloves, as it can stain skin.\u003c\/p\u003e\n\n\u003ch2\u003eOrdering \u0026amp; delivery\u003c\/h2\u003e\n\u003cp\u003eSold as single 1 litre bottles, priced per bottle. A minimum order of 4 bottles applies, shown when you add to basket. Delivery charges and lead times are shown at checkout.\u003c\/p\u003e\n","brand":"Industrial Supplies Co","offers":[{"title":"1 Litre","offer_id":63296621773187,"sku":"SSHF-893804-01","price":52.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0621\/3002\/8778\/files\/spray-indicator-dye-1l-driveway-weeds-ad69d98b-37dc-4fec-9e3f-6761391ebf82.jpg?v=1794664065","url":"https:\/\/industrialsuppliesco.co.uk\/products\/spray-indicator-dye-blue-1-litre","provider":"industrialsuppliesco.co.uk","version":"1.0","type":"link"}