Quantcast Section II. Pesticide Mixing Calculations - Pesticides in the Military

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
It is difficult to overemphasize the importance of making accurate calculations
each time a pesticide is mixed. There are several reasons for emphasizing this
a.  Safety. If a formulation is prepared with too high a working concentration,
human lives and other nontarget organisms may be endangered.
b.  Effectiveness. If a formulation has too low a working concentration, the
control program may be a failure and insects may develop resistance to the pesticide.
In addition, a repeat application may be necessary, thereby increasing the total
exposure to humans and other nontarget animals.
Economy. Pesticide concentrates are expensive. If calculations in mixing
are not precise, not only do we run the risks cited in paragraphs a and b above, but we
also may needlessly waste toxic materials. Although the cost may not be great for any
one given error, the cumulative expense due to error may be enormous on an Army-
wide basis.
a.  General. If we were mixing pure technical grade toxicants with diluents,
mixing problems would be simple. We would merely have to mix, for example, 2
pounds of toxicant with 98 pounds of diluent (or 2 gallons with 98 gallons) to obtain a 2
percent mixture. In practice, however, our calculations are never quite so simple. We
are not necessarily mixing 100 pound or 100-gallon quantities, and our concentrates are
never 100 percent pure. Therefore, we use formulas that simplify our work as much as
possible. In order to use the formula, there are certain basic elements of information we
must have. The following must be obtained from the pesticide label:
(1) The name of the active ingredient (toxicant), its concentration, and its
form (carbaryl, 80% powder; malathion, 95% solution concentrate; etc.).
(2) The type formulation to be prepared (dust solution, emulsion, etc.) and
the diluent to be used.
(3) The concentration of toxicant desired in the final formulation (1%, 2%,
05%, etc.).
(4) The quantity of final formulation required (5 gallons, 100 pounds, etc.).

Medical News
ASPS: Cosmetic procedures increased 3 percent in 2014
(HealthDay)—According to a new report, 15.6 million cosmetic procedures, including...
AMA: Key steps for minimizing liability risk in telemedicine
(HealthDay)—Key steps should be taken to minimize the potential risk...
Oral bisphosphonate use tied to lower endometrial cancer risk
(HealthDay)—For postmenopausal women, oral bisphosphonate use is associated with a...
Federal study: Foster kids struggle to get health screenings
Some foster children are not getting their required medical screenings...
CDC: Routine procedures lead to two cases of HCV transmission
(HealthDay)—Two cases of hepatitis C infection that occurred during routine...
US public sees ill health as resulting from a broad range of causes
A new NPR/Robert Wood Johnson Foundation/Harvard T.H. Chan School of...
Anxious people more apt to make bad decisions amid uncertainty
Highly anxious people have more trouble deciding how best to...
Stress ups risk of peptic ulcer regardless of H. pylori status
(HealthDay)—Psychological stress correlates with increased risk of peptic ulcer, with...
Abraham Verghese: “A saintliness in so many of my patients”
There’s a quiet dignity that envelopes Abraham Verghese, MD. You can...
Improving diagnosis of coronary artery disease in women—recommendations of a national expert panel
Obstructive coronary artery disease (CAD) in women often presents with...
Heart valve repair surgery may ease mental health symptoms, too
(HealthDay)—People with a serious heart valve defect have less depression...
New FDA official inherits raft of projects, challenges
One of the nation's leading medical researchers joined the Food...
Lycopene may ward off kidney cancer in older women
A higher intake by postmenopausal women of the natural antioxidant...
When I'm 64—I'll still have hot flashes?
Some 40% of women 60 to 65 years old still...
Invasive strategy improves outcome in elderly with ACS
(HealthDay)—An invasive strategy using coronary angiography results in a better...
Laser at 924/975 + curettage best for axillary hyperhidrosis
(HealthDay)—For patients with axillary hyperhidrosis, the optimal treatment option is...
Circadian clock has significant impact on allergic reaction
(HealthDay)—The circadian clock seems to have a significant impact on...
Do heart surgery patients get too many blood tests?
(HealthDay)—The high number of blood tests done before and after...
You can't take your genes with you: Strategies to share genetic information after death
Does the child of a person with a heritable form...
Alcohol screening and intervention for risky drinking: A guide for physicians
A new review in CMAJ (Canadian Medical Association Journal) provides...

Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +