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6.11 MIXING CHEMICALS _______________________________________________________
!
WARNING
Special safety equipment may be required to prevent
accidental exposure to poisoning and should be worn at
all times when working with chemicals.
Contact your chemical supplier for proper material
handling. Always refer to the chemical manufacturers
MSDS (Material Safety Data Sheet), that is available for
all chemicals. Special attention should be given to
required safety equipment, first aid treatment for
accidental inhalation, swallowing, absorption or
injection, and compatibility with other chemicals.
Never work with harmful chemicals alone. Always have a
second person nearby in case of emergency.
Some chemicals may be flammable or produce
flammable vapors.
• Do not smoke when handling or mixing chemicals.
• Never store chemicals near an open flame or
spark which could ignite chemical or chemical
vapors.
The mixing of non-compatible materials or formulations
not previously tested by chemical professionals should
be avoided. Volatile "brews" can be damaging and costly
to repair and dispose of. Leave the burden of mix-up
compatibility to the people who manufacture and sell the
products to you.
Mis-use of chemicals is not a warrantable offense if
sprayer damage occurs.
Mix times may vary by chemical, load size, water
temperature, and operator experience.
Normal mix time can be 20 to 30 minutes per tank. This
allows enough time to provide complete particle
distribution throughout the complete mixable liquid in the
tank.
Just because the water is murky and clouded in the tank
does not mean all the chemical is mixed.
NOTE: System calibration and product active ingredient
formula calibration should have already be completed. If
not, refer to the appropriate sections and compute your
application data before continuing.
SPRAYER OPERATION
Slowly add (Spoon feed), the chemicals to be applied to
the agitating tank water. The addition of some products,
all-at-once, may cause damage to the centrifugal pumps
internal mechanical seals. Wettable Powders (WP),
Emulsified Concentrate (EC), Water Dispersed Granular
(WDG) chemicals etc., are abrasive in nature and should
include extra mix time in the tank. Pre-packaged
dissolvable bag types are also difficult to mix rapidly. The
slow dissolve of the wrapper may lead to clogged suction
strainers
under
certain "hasty"
products can mix easier than most dry formulations, but
can be difficult to mix in cold water areas. Consult with
your chemical supply representative for any precautions
or mixing suggestions for any unfamiliar products.
GIve it some time! Haste during the critical mixing
phase, then spraying too soon, may cause severe
damage to the turf because of rate changes from what
your original rate was suppose to be.
• The first 1/3 of the tank could apply more than the
desired rate when heavy products are not fully
suspended in the carrier water.
• The second 1/3 of the tank could apply close to
the correct rate.
• The final 1/3 of the tank would be light on active
ingredients.
At the completion of the chemical mixing phase (allowing
proper time for particle distribution) you are now ready to
apply the chemical mix to your fine turf.
6
conditions.
Liquid
33
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