Tank Mix Compatibility Calculator

Compatibility score for multi-product mixes.

Number of products

Product 1 formulation

Product 2 formulation

Water hardness (ppm)

Water pH

Water temperature (F)

Tab to move between fields

Compatibility score

Risk level (1-3)2

Water conditioner needed0

Jar test mL/product473

Spray water pH7

Products in tank2

How to Use This Calculator

Enter each product to be tank-mixed, including herbicides, insecticides, and adjuvants.
Set the water pH and hardness level.
Review the compatibility score and any incompatibility warnings.
Follow the jar test procedure to physically verify compatibility before field mixing.
Add products in the correct order: WP/WDG then liquids then EC then adjuvants.

How the result changes with Product 1 formulation

Number of products: Total products (pesticides, fertilizers, adjuvants) to mix.
Product 1 formulation: 1=SP, 2=WP, 3=WDG, 4=SC/Flowable, 5=EC, 6=Solution, 7=Adjuvant.
Water hardness (ppm): CaCO3 concentration in ppm. Check your water test report.
Water pH: Spray water pH. Ideal range is 5-7 for most pesticides.
Water temperature (F): Cold water reduces solubility of powders and dry flowables.

Compatibility score: 0-100 score. 80+ = Low risk, 50-79 = Moderate, <50 = High risk.
Risk level (1-3): 1 = Low risk (proceed), 2 = Moderate (jar test recommended), 3 = High (do not mix without testing).
Water conditioner needed: 1 = Yes (add ammonium sulfate or water conditioner), 0 = No.
Jar test mL/product: Proportional mL of each product for a standard 1-quart jar test.
Spray water pH: Entered water pH. Target 5-7 with a buffering agent if needed.
Products in tank: Number of products being tank mixed.

Identify Input Parameters
4 parameters
Number of products = 2, Product 1 formulation = 5, Product 2 formulation = 3, Water hardness (ppm) = 150 = 6 input(s) provided
Calculate Compatibility score
Compatibility score = 100
75 = 75
Calculate Risk level
2 = 2
Calculate Water conditioner needed
Water conditioner needed
0 = 0