TC (original drug): the original drug of pesticide must be processed and made into preparation before it can be used.
EC (EC): EC is very easy to use. It can be used by diluting it with water to a certain proportion of emulsion.
SC (suspending agent): The suspending agent is suitable for all kinds of spraying methods and can also be used for ultra-low volume spraying. It has good dispersibility and suspension in water.
SP (soluble powder): When used, it is dissolved in water to form an aqueous solution for spraying.
WP (wettable powder): When the wettable powder is used, water is added to prepare a stable suspension and sprayed with a sprayer. Spraying on plants has good adhesion and better efficacy than the powder of the same original drug.
WDG/WG (wettable powder), SL (aqueous solution).
IPA is the abbreviation of isopropylamine, not a pesticide formulation.
Extended data:
Dose standard:
1, active ingredient content
The content of active ingredients is the most important index in pesticide preparation, which is expressed by mass percentage g/kg or g/L.
2. Fineness of powder particles
In a certain range, the drug effect is inversely proportional to the particle size. The smaller the contact killing agent powder, the larger the contact area between the insecticide and the insect body per unit weight, and the better the contact killing effect.
3. Bulk density
In the case of consistent determination methods, the bulk density of powder and wettable powder is related to the bulk density of fillers, the types of additives, the types and concentrations of effective components and the fineness of powder particles, among which the bulk density of fillers has the greatest influence.
Step 4 Wettability
Wetting agent can reduce the interfacial tension between pesticide particles and water, so that the powder can be quickly wetted and dispersed by water.
5. Suspension rate
The suspension rate of suspension is an important factor affecting the efficacy of the preparation. In China, the suspension rate of pesticide diluent is required to be between 50% and 70%, and a few products require 80%.
6, emulsion stability
The vast majority of emulsions used in agriculture are oil-in-water (O/W) type, and it is required that droplets can be evenly distributed in water for a long time without oil-water separation, so as to keep the concentration of effective components in the emulsion uniform, give full play to its efficacy and avoid phytotoxicity.
7. Smoke formation rate
Different pesticides have different smoke formation rates at the same temperature, or the same pesticide at different temperatures, and the temperature depends on the pesticide formula. Pesticide formula with high smoke forming rate should be selected to be processed into smoke agent.
References:
Baidu encyclopedia-pesticide dosage form