The commonly used Pipette kits are mainly composed of a pipette and a pipette tip. The pipette tip is a single empty 1000 ul pipette tips,200ul pipette tips,10ul pipette tips,low retention pipette tips Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yypcr.com
After the two bogey and ammonium bicarbonate are mixed into the soil, they are converted into ammonia to be absorbed by the crop, and the conversion rate is much slower under alkaline conditions than under acidic conditions. After the ammonium bicarbonate is applied to the soil, it has an alkaline reaction with a pH of 8.2 to 8.4. When mixed with ammonium bicarbonate and urea, the rate of conversion of urea into ammonia is greatly slowed down, which is likely to cause loss of fastactivin and loss of volatilization. Therefore, urea and ammonium bicarbonate are not suitable for mixing or simultaneous application.
The three bogey are applied to the surface of the ground and applied to the surface of the earth. It can be absorbed by the crop after 4 to 5 days of transformation at room temperature. Most of the nitrogen is volatilized during the ammoniumification process, and the utilization rate is only about 30%. Soils with high soil and organic matter content will have more nitrogen loss. Therefore, nitrogen cannot be applied on the surface.
Four bogey immediately after urea application. Urea is an amine nitrogen fertilizer, which must be converted into ammonia nitrogen after application to be absorbed and utilized by crops. In the process of conversion, due to different soil, water and temperature conditions, the time is long and short, generally it takes 2 to 10 days to complete. If the urea is applied immediately after application or the dry land is applied before heavy rain, the urea will be lost immediately.
Huaxian Liu Huimin
Cavity reservoir; the pipette uses the principle of air displacement and controls the maximum displacement of the piston by rotating a screw with an ultra-fine thread
displacement, and then control the amount of liquid suction. There are the following problems when using the above kit for suction: 1. The suction volume is controlled by the pipette
After the pipette is sterilized or used for a period of time, it is easy to cause "hidden" failures, which cause the operator to be difficult to detect.
The actual suction volume is inaccurate, and it needs to be adjusted frequently, and the operation is cumbersome and time-consuming; 2. To improve the pipetting accuracy, the operator's
The operation requirements are high, and it is easily affected by factors such as the suction speed, the depth of the tip below the liquid level, and the inclination angle of the pipette.
The actual suction volume will be heard; 3. The actual suction volume will be affected because the suction head cover is not tight and leaking, and it will not be easily detected; 4.
When performing experiments that require high accuracy, such as analysis, in the operation of equal volume aspiration of liquids with different densities, the actual
The actual suction volume will be affected by the density itself; 5. In order to improve the accuracy, this type of pipette needs to carry out high
Cost-optimized design results in extremely high pipette costs.
There are four bogey in using chemical fertilizer
Single application should be applied alone. The ideal application method is to apply organic fertilizer first, and then apply urea, superphosphate and potassium chloride in a reasonable formula.
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