The toxicity of insecticides to humans and animals can be divided into acute toxicity and chronic toxicity. Acute toxicity refers to the toxicity of acute pathological reactions caused by a certain dose of a single dose of oral administration, skin contact or inhalation through the respiratory tract.
The toxicity of insecticides is usually measured by lethal dose (LD) or lethal concentration (LC) in mg/kg body weight or mg/L. The indicator indicating the degree of acute toxicity, the most important is the lethal dose (LD50) or the lethal concentration (LC50), which is the dose or concentration required to cause the test animal to produce 50% of acute poisoning death. The value is biometric. The method is calculated and calculated. This index is more representative and stable. Generally, this index is used as the comparative data of the toxicity of the pesticide. In fact, the larger the value of the lethal dose, the smaller the toxicity; The smaller the value, the greater the toxicity.
The magnitude of the lethal dose is related to the virulence and physicochemical properties of the drug, as well as the type of animal to be tested (eg, white mice, rats, guinea pigs, rabbits, dogs, sheep, etc.), sex, age, and mode of administration. Have a close relationship. The routes of administration include oral administration, skin application, inhalation, intraperitoneal injection, etc., and poisoning occurs during the use of insecticides, mostly skin contact absorption. The following lists the acute toxicity classification standards of pesticides in China (Table 2). In the toxicological test method (GB15670-1995), the test animals are all preferred rats, and the method can be determined by Horn's method, probability unit-logarithmic angle method or Karber method.
Drill holster is a tool belt accessory that is designed to hold a drill securely on a person's waist or hip. It is typically made of durable materials such as leather, nylon, or heavy-duty fabric and features a sturdy clip or loop that can attach to a belt or tool belt.
The holster provides a convenient and safe way for professionals and DIY enthusiasts to carry their drills while working on various projects. It keeps the drill close at hand, making it easy to access when needed, and helps prevent the drill from being dropped or damaged.
Drill holsters come in different designs to accommodate various types of drills and accessories, such as cordless drills, impact drivers, and drill bits. Some holsters may also feature additional pockets or compartments for storing other small tools or accessories.
Overall, a drill holster is a handy tool accessory that can help improve efficiency, safety, and organization in the workplace.
Drill Holster,Cordless Drill Holsters,Drill Bit Holster,Drill Tool Holster
ZHANGJIAGANG CITY XIANGLE TOOL CO., LTD. , https://www.sjxiangletoolbag.com