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Blue-Gem Dye Spray Indicator

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Blue-Gem Dye Spray Indicator
£24.48 Inc VAT £20.40 EX VAT
  • Buy 6 for £18.00 (£21.60 incl. tax) each and save 12%

Availability: In stock

Temporarily Stain The Treated Area To Avoid Missing Or Overdosing

Due to supply issues, this item may temporarily be supplied in alternative packaging. Rest assured this is exactly the same product and will work in exactly the same way

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Key Information

Additional Information

Active IngredientFood Grade Dye
LERAP CategoryDoes Not Apply
Pack Size1L
Pack Size Coverage1 Hectares or 10,000m2
Knapsack Sprayer Rate12.5-30ml per 10L of water, up to 50ml depending on surface
Boom Sprayer Rate1-2 L per Hectare
Application Method(s)Boom Sprayer, Knapsack
Area of UseAmenity Turf, Artificial Surfaces, Hard Surfaces, Lawn, Paddock, Pasture, Sports Turf, Trees & Ornamentals
Safe For Use OnConifer Safe, Grass, Lawns, Near Water, New Grass, Paddocks, Pasture, Safe Around Fruit Trees, Safe Around Shrubs, Safe Around Trees, Sports Turf
Period Of UseAll Year Round
Product LabelDownload


Blue-gem ® is a food grade blue dye that is mixed in the spray tank with herbicides and pesticides to help improve accuracy. An integral part of spraying, Blue-gem will identify the sprayed area by temporarily dying the area. The treated area stays blue for a few days after application (how long it remains will depend on the surface) and then fades with sunlight or washes away with rain.

Using a spray indicator, such as Blue-gem, will in turn save you money and time as you are not missing any areas or overdosing any areas by spraying more than once. It can be used in a knapsack or boom sprayer and is compatiable with herbicides, fungicides, insecticides, moss killers and liquid fertilisers.

To use; half fill the spray tank with clean water, agitate the water and add the required amount of blue-gem. Then add the pesticide or other treatment(s) and fthen fill the tank with water to the desired level and commence spraying.

Key Benefits:

- Safe for mixing with liquid herbicides and pesticides.

- The dye is temporary- washes away with rain and faded by sunlight.

- Saves money as overdosing is reduced.

- Saves time as areas are less likely to be missed.

- Non-toxic

Our Recommendation:

- Always read the product label before use.

- Avoid getting the product on areas you do not want temporarily dyed.

- Mix in with herbicides so you can clearly see the area you have sprayed.

- Wear Gloves to avoid stained skin.

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Product Videos

    How to Set up, Calibrate and Use a Knapsack Sprayer