Percentage concentration: refers to the number of servings of pesticide active ingredients in 100 parts of liquid medicine or powder, expressed by "%". For example, 2% urea means 2 kg of urea and 98 kg of water in 100 kg of urea solution.
Multiple concentration: refers to the water addition ratio of 1 part of pesticide, which is usually expressed by weight. For example, prepare 700 times of 50% carbendazim, which is made by mixing 50 parts of carbendazim with 700 parts of water.
Conversion method Percent concentration converted to ppm concentration: conversion formula is: 1 part of pesticide added water = pesticide percentage × 1000000 / number of ppm to be prepared.
For example, the content of 40% ethylene is 1 kg of a 2000 ppm solution, and the amount of ethylene added is 40% x 1000000/2000 = 200 kgppm.
Convert to multiple concentration: divide the percentage by the number of ppm and shift the decimal point back by 4 to get the dilution factor. For example, 40% of ethephon is 1000ppm. When converted to a multiple concentration, 40÷10000=0.4, and the decimal point is shifted back 4 places, which is 400 times.
For the mixing of several pesticides in the water method, not every additional medicine is added once, but the same amount of water is used to calculate the concentration. For example, 500 times of urea and 1000 times of methyl thiophanate are prepared by adding 2 parts of urea plus 1 part of methyl thiophanate plus 1000 parts of water.
In addition, when it is water, it should be formulated into mother liquor first, that is, first use a small amount of warm water to open the liquid, then add water to the required concentration, fully dissolve, improve the suspension, improve the efficacy, prevent phytotoxicity.
Metallographic Cutting Machine
Easy to set up using an intuitive user interface that requires almost no training
The simple user interface and color display make operation very simple. No complicated menu. Use multi-function knob to set parameters, joystick to quickly position the workpiece, and automatically adjust the height of the cutting wheel. Yes, that's it.
The relocation of the workpiece is replaced by automatic X - axis movement
Thanks to optional X-axis movement, a series of cuts can be performed without wasting time repositioning the workpiece. The cutting table can be moved 40 mm, and the user can choose up to four sliders of different thickness.
With the help of a locator laser, the position can be reached on the first attempt
Positioning can be time-consuming, but Secotom uses a positioning laser to point out where to cut, and positioning becomes a breeze. The combination of laser and joystick enables easy positioning.
Cutting in a variety of sizes and shapes with the ultimate flexibility of the movable T-slot cutting table
Secotom's cutting table provides extreme precision and flexibility for a variety of sizes and shapes. Capable of cutting large and deep workpieces (up to 70 mm/2.8 "in diameter or 165 x 50 mm/6.5" x2 "in size). The cutting table is equipped with 8 mm T-groove, and users can choose from a variety of fixtures that are most suitable for their cutting operations and can achieve the highest accuracy of the toola
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