Pollution-free production of fertilizers for vegetables

First, the principle of fertilization of pollution-free vegetables The principle is based on organic fertilizer, supplemented by other fertilizers; mainly multi-component fertilizer, supplemented by single element fertilizer; mainly based on base fertilizer, top dressing supplement. As far as possible, the application amount of chemical fertilizers should be limited. If it is really necessary to apply chemical fertilizers, there should be limited and selective application. The following principles must be applied to the application of chemical fertilizers: the prohibition of the application of nitrate fertilizers shall be controlled at a rate of 25 kg per mu; the chemical fertilizers must be applied in conjunction with organic fertilizers, and the last topdressing of chemical fertilizers shall be 30 days before harvest. Second, in the fertilization should pay attention to the problem (a) human excrement and toilet fertilizer to fully ferment and decompose, top-dressing after pouring water rinse. (b) Fertilizers should be deepened and applied early. Deep application can reduce nitrogen volatilization, extend fertilizer supply time, and increase nitrogen utilization. 1/2 ammonium nitrogen fertilizer is applied to soil layers below 6 cm, and urea is applied to soil layers below 10 cm. (3) Biological nitrogen fertilizer should be used in combination with increasing phosphorus and potassium fertilizers. (D) Flexible fertilization according to the type of vegetables and cultivation conditions. Different types of vegetables, the degree of nitrate accumulation is very different, the general leaf vegetables than fruit vegetables. Under the different conditions of the same kind of vegetable, the content of nitrate in the soil is also different. Generally, under the high temperature and strong light, the accumulation of nitrate is less, and under the low temperature and weak light, the nitrate is accumulated in a large amount. In the fertilization process, the types of vegetables, cultivation seasons, and climatic conditions should be taken into consideration to grasp a reasonable amount of fertilizer.

With high transparency polystyrene and clear graduation, Sorfa stretching Serological Pipettes are easy to be read in accurate volume by users. Graduation is printed on pipette surface to be calibrated on accuracy ± 2%. Serological pipettes vary from 5ml, 10ml and 15ml. Two types of color code on tips make pipettes easily recognizable in different volume. Preferably, each pipette contains a filter plug which is better than cotton plug in its bore to prevent passage of particulates.

Two types of packaging are available for pipettes: buck packaging and individually packaging in plastic/paper wrapper. All Sorfa serological pipettes are packaged in bags with sterilization bags, RNase-free, DNase-free and Non-pyrogenic.

Product Feature:

1. Three types of volume 5ml, 10ml and 15ml

2. Bidirectional graduation and negative graduation improve the accuracy

3.Two types of color code on tips make pipettes easily recognizable

4. All Sorfa serological pipettes are packaged with sterilization in bags.

5. Buck packaging and individually packaging in plastic/paper wrapper.

6. RNase-free, DNase-free and Non-pyrogenic.

Packaging information:

Lot number is printed on packaging for tracking

Plastic/paper wrapper is easy to open

Cartons are customized for protecting products.

Product	Cat NO.	Graduation (ml)	Color code	Sterile	Packaging	Pack
5 ml Serological Pipette	P8050-3	1/10	Blue	Gamma	Individual	300pcs/box, 1800pcs/ctn
5 ml serological pipette	P8052-3	1/10	Blue	Gamma	Bulk	300pcs/box, 1800pcs/ctn
10 ml serological pipette	P8100-3	1/10	Red	Gamma	Individual	200pcs/box, 1200pcs/ctn
10 ml serological pipette	P8102-3	1/10	Red	Gamma	Bulk	200pcs/box, 1200pcs/ctn
15 ml serological pipette	P8150-3	1/10	Purple	Gamma	Individual	200pcs/box, 800pcs/ctn
15 ml serological pipette	P8152-3	1/10	Purple	Gamma	Bulk	200pcs/box, 800pcs/ctn

Stretching Serological pipette

Stretching Serological pipette, Disposable Plastic Serological pipette, Disposable Sterile Serological pipette, Plastic Sterile Serological pipette

Zhejiang Sorfa Medical Plastic Co., Ltd. (Ningbo Jiangdong Aron Imp&Exp. Co.LTD) , http://www.sorfapipettes.com