【Abstract】Objective: To study the effects of seed soaking with different concentrations of two growth regulators, Good Fresh Harvest and Flower DuoLe, on the germination and growth of Eustoma seeds. METHODS: Using double-layer filter paper culture method and indoor potting method, the soaked seeds w Read More

First, the significance of seed germination seeds through germination can not only lift the dormancy, but also can make the young shoots in the right time out of the ground, out of the ground neatly, and to improve the germination rate of Yang nursery at the same time can also enhance the resistance Read More

Nitrogen is one of the most important nutrients in the growth process of flue-cured tobacco. Through low-temperature cultivation and research in a biochemical incubator, it was found that more than 60% of the nitrogen nutrients absorbed by flue-cured tobacco come from the soil, and fertilizer nitrog Read More

Operational details of coliform group determination Coliform group refers to a class of Gram-negative non-spore-forming bacilli that can ferment lactose, produce acid and gas, and are aerobic and facultatively anaerobic. The bacteria mainly come from human and animal feces, so as a fecal contaminati Read More

1. The biochemical incubator must be placed in a sun-proof, ventilated and dry place, with the distance between the equipment and the wall not less than 10cm.2. The biochemical incubator should be installed on a three-pin power socket with reliable grounding to ensure normal operation and personal s Read More

Bacterial Culture Bacterial culture is a technique of growing and reproducing bacteria by artificial means. Bacteria are extremely widespread in nature, large in number and diverse, and can either benefit mankind or be the cause of disease. Most bacteria can be cultured artificially, i.e., they are Read More

According to the different cold air discharge methods, pressure steamers are divided into two categories: downward exhaust pressure steamer and pre-vacuum pressure steamer. The bottom exhaust pressure steamer is also called the gravity displacement pressure steamer. It uses the principle of gravity Read More

Disinfection and sterilization: control hospital infections from the source Read More

What should you pay attention to in the daily operation of fully automatic vertical high-pressure steam sterilizer ? 1. Precautions and maintenance of fully automatic vertical high-pressure steam steamer1. When the fully automatic vertical high-pressure steamer is in use, the safety valve should be Read More

1.Test materials① Bacillus thermophilus paper sheet; Bacillus thermophila ATCC7053, containing 5-105 CFU/piece of spores② 121℃ pressure steam sterilization chemical instruction card; bromocresol peptone water culture medium, 116℃ for 20 minutes after high pressure for use.③ 0-150℃ leaving point ther Read More

Instructions for use and maintenance of the sterilizer 1. To ensure safe use, ensure that the sterilizer power cord has a good grounding. 2. The sterilizer should be placed in a suitable environment, which should be ventilated and dry, and free of flammable and explosive items. 3. Do not remove the Read More

Although high-pressure steam has the advantages of fast speed, reliable effect, high temperature, and strong penetrating power, it can also lead to failure if used improperly. Some opinions on the precautions for using high-pressure steam sterilizers.1. Preliminary treatment of disinfected items Any Read More