High-Quality PCR Plates with Universal Compatibility Semi Skirted PCR Plate,Non Skirted PCR Plates,Low Profile PCR Plates,Real Time PCR Plate,PCR Reaction Plate Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yypipette.com
Stored grain pests refer to the collective names of insects and mites that harm food and processed products in various fields such as harvesting, storage, processing and transportation of food. Due to the small body of the stored grain pests (generally in the range of 1-5 mm), the habitat is concealed, the fertility is strong, and the variety is numerous. Widely distributed, it is very harmful to food security storage. According to the transmission route and living habits of pests, multi-channel and multi-method can be used to prevent and control the stored grain pests.
First, cut off the route of transmission. Strengthen field pest control, do a good job in insecticide cleaning of warehouses, factories, processing equipment, transportation equipment, and cut off the way insects spread into warehouses.
Second, habits prevention. According to the living habits of stored grain pests, such as phototaxis, warming, climbing, drilling, etc., they are used to do their best or use their evil to prevent and control, trap, prevent, and repel. At present, there are several methods that are more effective in various places.
1, gland prevention. In view of the habits of moth pests (mainly wheat moths) in the mating, spawning and emergence of grain, the appropriate materials are used to seal the grain surface, so that the adults cannot lay eggs on the grain surface. The key to prevention and control: it must be closed before the first generation of moth adult emergence, preferably before the spring warm, when the grain temperature is below 15 °C. When the gland is pressed, it is required to completely seal the grain surface, and often check the grain condition, generally when the temperature is low in the morning and evening. Note that seed grain is generally not suitable for gland sealing, so as not to affect the germination rate.
2. Move the top. It is also a characteristic of moth pests in the mating and spawning of grain. The rice and wheat that have been stored for a period of time are removed from the upper part of the grain pile by about 20 cm in the winter period below 18 °C. , centralized treatment to kill larvae.
3, habits and traps. The use of adult elephants such as corn elephants and red worms has the habit of climbing and grouping. It intentionally divides the grain into many small tip piles of 30-50 cm in height, attracting pests to cluster at the tip of the pile, and regularly taking out the tip food. The sieve is concentrated. It is also possible to insert grass handles, sesame stalks, corn cobs, etc. on the tip of the pile, and the pests will also climb onto these traps, and the traps will be periodically taken out for centralized treatment. This method should be carried out during periods when the pests are active during the hot season. You can also use the scent of pests, mix the onion, bran and various oil cakes with dried onions, dried pumpkin, sweet potato and other ingredients into the concentration of 0.1% pyrethrin or 0.5-1%. a solution of insects or dichlorvos, made into a bait bait and dried, put the bait into the corn cob, sorghum ear or grass handle, and put it on the surface of the grain pile to trap, or insert the grain into the bamboo tube with a small hole The pile of internal traps. Before wintering, double-layer old sacks or straw bags can be hung around the wall and the door of the granary about 3 cm above the ground, as a wintering place to trap the moth larvae such as Indian glutinous rice, pink spotted hawksbill, etc. An old sack or grass bag sprayed with malathion or trichlorfon on the inner and inner passages to intercept and kill the beetles that climbed out of the grain pile for wintering.
Third, high temperature insecticide method. Generally, the stored grain pests can withstand high temperatures of 35-40 ° C. Under the condition of 46-48 ° C, the pests can be killed for a long time, and above 50 ° C, most of the pests will die in a short time. High temperature insecticides generally require temperatures above 46 °C. High temperature insecticides often use the following methods.
1. Sun exposure method. In the hot season, the hot field is exposed to the sun, and the thin booth is turned over. Generally, it takes 4-6 hours to dry, and the grain temperature reaches 46 °C or above, and it is kept for 2 hours to ensure the killing effect. However, the moisture in the warehouse should be controlled below 12%.
2, mechanical heating insecticide. Use a heating and drying machine such as a vulcanization tank dryer, a tumble dryer, a tower dryer, etc., heat the grain for 33-60 minutes, heat the grain temperature to 50-55 ° C, and then take the machine to slow down the 1-2 hours. , then ventilate and cool, you can kill all young and adult. If you suspend Su for 4-6 hours, you can kill the eggs.
3, boiling water to kill silkworms, peas. First put the grain in the basket, put it in the boiling water together with the basket, and stir the beans continuously. After 28-30 seconds, immediately put the basket, put it in cold water to cool it, then spread it out to make the water Reduce to 12% or less and store.
Fourth, low temperature insecticide. Generally, the stored grain pests stop moving when the ambient temperature drops to 8-15 °C. At -4 ° C to 8 ° C, that is, in a cold paralysis state, it can cause death for a long time; below -4 ° C, the pest can quickly die. Low temperature control can be carried out according to local conditions.
1. The outside of the warehouse is thinly frozen, and it is cooled and sealed. In the cold season, the relative humidity is generally below 75%, and the temperature is between -10 °C and -5 °C in the evening. The insect grain is moved together with the warehouse padding equipment to the warehouse site, diluted 5-10 cm thick, and often flip. At night, the clamping work should be done to prevent the frost from dew and the food moisture and moisture. After freezing for 1-3 days and nights, when the temperature is low in the evening or in the early morning, the grain is moved into the warehouse and sealed for storage.
2, ventilation and freezing insecticide. Mainly choose dry weather with a temperature below -5 °C, open all the doors and windows of the warehouse, and naturally ventilate. Mechanical ventilation is available on condition. When the grain temperature is close to the temperature, close the doors and windows or use a gland to seal the storage.
3. Low temperature control of pests. Use the low temperature in winter (should be below 15 °C) to dry the weather, take the cold outside the warehouse or ventilate the inside of the warehouse to reduce the temperature of the grain, and then close the storage. Thereby reducing and inhibiting the development and reproduction of pests. Low-temperature storage of grain can also be carried out using underground granaries and mechanically cooled low temperature warehouses.
Fifth, gas control. Artificially change the gas composition in the grain pile, reduce the oxygen content in the grain pile, increase the carbon dioxide concentration, and cause environmental conditions that are unfavorable for pest growth, so as to achieve the purpose of controlling pests. Common methods include natural anoxic storage (such as granary containment) and deoxygenated storage (using combustion or oxygen scavengers to rapidly reduce oxygen in the grain pile).
Sixth, drug prevention and treatment. It is the application of a poison (insecticide) to the pest to achieve the purpose of quenching. For example, aluminum phosphide for the control of stored grain pests can be placed on a non-flammable ceramic vessel, and the ceramic vessel can be placed on the surface of the grain pile and then stored in a closed grain pile. The dosage is 5 tablets per cubic meter.
We have excellent PCR or qPCR performance, and provide a variety of different specifications of PCR Plates to meet your experimental needs. All of our plastic consumables have been verified by engineers to be perfectly compatible with laboratory instruments and have excellent performance.
You can find different types of 96 Well PCR Plates, such as non-skirted, semi-skirted, 0.2ml, 0.1ml, transparent and white PCR plates. There are also 40ul and 50ul 384 Well PCR Plates. We can help you choose the right PCR platform according to your requirements. Please contact us and we will send you samples for free.
More info about PCR Plates:
What Are PCR Plates?
Researchers often use PCR plates in high-throughput screening thermocycler applications due to their compatibility with most thermal cyclers. The uniform and thin walls enable a precise thermal transfer. The wells are often raised slightly to accommodate sealing mat, film, and foil. They are also autoclavable.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】