Signal Blue Spray Indicator

Signal Blue Spray Indicator, manufactured by Precision Laboratories, is a highly visible blue spray pattern indicator dye that aids in pesticides, herbicides, fungicides, PGRs, foliar nutrients, and wetting agents precision during spraying.

Unlike permanent dyes, this blue dye fades naturally within a couple of days, so treated areas revert to normal color perfect for public areas, lawns, and more. As you spray, you will see where pesticide droplets accumulate. No drift, no overlap. No missed sections. This is invaluable when dealing with plant safety or coverage-sensitive areas.

Signal Blue Spray Indicator is a non-toxic, temporary spray dye designed to show you where your spray solution has been applied. With ultra-visible coverage, fade-out grace, and cross-label compliance, it's a low-cost add-on that yields high confidence, less rework, and better results making every sprayer its own quality control system.

Tools Needed

A handheld pump sprayer, backpack sprayer, or handgun applicator will be needed. 

How to Use

• Step 1: Broadcast and Handgun Applications, use 32 ounces of Signal Blue Spray Indicator per 100 gallons of spray solution. For backpack sprayers, apply 2 to 4 ounces of product per 3 gallons of spray solution.
• Step 2: Add Signal Blue after you have filled your spray tank with water and added your main product (herbicide, fungicide, etc.), and right before your final agitation. Give the tank a good stir or mix to evenly distribute the dye.
• Step 3: Spray the tank mix solution with Signal Blue Spray Indicator as instructed on the pesticide's label.

Where to Use

Signal Blue Spray Indicator can be used for golf courses, parks, cemeteries, athletic fields, lawn care maintenance, utility rights-of-way, forestry, and any large turf or grass areas. 

When to Use

The beauty of this product is that it fits any time of year when you’re applying liquid products to turf.

Safety Information

Signal Blue Spray Indicator is safe for people and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product. 

Special Considerations

Turf or weed color, height, and individual water conditions, such as hardness, pH, iron content, etc., may dictate variations from the suggested use rates.