After the nitrogen blowing instrument is installed, the chassis is supported in a constant temperature water bath, the water bath power is turned on, the water bath temperature is set, and the water bath starts to heat. The nitrogen blowing instrument is lifted , and the samples that need to be evaporated and concentrated are respectively placed on the sample positioning frame and are lifted by the tray, wherein the height of the tray and the positioning frame can be adjusted according to the size of the training sample tube. Open the flow meter needle valve, and the nitrogen gas reaches the gas distribution plate through the flow meter and the gas supply pipe. After the gas is distributed, it is sent to the needle valve tube (mounted on the gas distribution plate) above each sample position. Then, the needle valve needle valve is adjusted through the net school, and the nitrogen gas is blown to the liquid sample test tube through the needle valve tube and the needle. The needle valve tube can be slid up and down by adjusting the lock nut, the needle height is adjusted, and the sample surface is blown with ripples, and the sample is again Do not splash as well. Finally, the nitrogen blower was placed in a water bath until evaporation and concentration was completed.
Cement pipe http: //
Calcium chloride dihydrate, magnesium chloride hexahydrate http: //
Plastic hose , pvc hose http://
Vacuum packaging machine http://www. zczljx.com Â
Vacuum packaging machine   Http://
Greenhouse film , agricultural film , grout film , PO film http://
Tiller , pastoral management machine    Http://
Plastic pipe, plastic pipe inside and outside http: //
Fence railings, fences http: //
Grooved pipe fittings , fire pipe fittings    Http://
Smoke oven , fresh milk sterilizer , vegetable washer   Http://
Butterfly trench, a trench gate   Http://
Dry mortar equipment , putty powder mixer    Http://
Fused optic cable, cable blowing, blowing winch   Http://   Â
Shandong Flour Mill , Shandong Flour and Flour Mill   Http://
Bauer ring , cpvc http://
Negative pressure fan , animal husbandry fan http://
Masterbatch , defoaming masterbatch , filler masterbatch    Http://
Edible oil filling machine , soy sauce vinegar filling machine , frozen meat slicer   Http://
Wine filling machine , glass water filling machine   Http://
Lubricating oil filling machine , pesticide filling machine   Http://
Paper tube machinery , paper tube machine , paper tube equipment    Http://
Core shooting machine http://
Diesel generator sets   Http://
Pipe with pressure opening machine , pipe with pressure sealing , pipe with pressure opening , pipe with pressure without stopping the opening    Http://
Pinus sylvestris finger joint plate , radiating pine finger joint plate , radiata pine glulam   Http://
Weifang epoxy floor paint   Http://
Plastic coated steel pipe , plastic-lined steel pipe   Http://
Iron remover   Http://
Corn bran , corn scraps , corn impurities   Http://
CNC punch feeder , led punch word device , CNC punching machine , solar CNC punching machine , CNC tapping machine  Http://
Mountain Egg http://
Mountain eggs , mountain eggs wholesale http://
Meat grinder, stuffing mix machine, tumbler, vacuum tumbler, meat chopper http: //
Goose fat liver , Landes goose    Http://
Electronic belt, magnetic separator, electromagnetic separator, permanent magnetic separator http:. // (14 June)
Chlorine dioxide generator http:// Â
PE threading pipe , PE pellets , PE pipe material http://
Flour , flour mill , Shandong flour mill , flour professional production plant http:// Â
Royal chicken , peacock seedling , pearl chicken  Http:// Â
Mountain Egg http://
Environmental dust removal equipment , powder conveying equipment , crushing and screening machinery , environmental ozone generator equipment  Http://
Polyvinyl alcohol    Http://
Palletizing machine , palletizing robot http://
CNC punching machine, led punching, punching equipment exposed word http: //
White duck , frozen duck , white duck manufacturer , duck , duck    Http:// www. qzrbq.com
Stone mill flour    Whole wheat flour    Http:// m
Weifang cleaning    Http://
Greenhouse construction   Greenhouse engineering  Http:// Â
PVC steel wire tube   plastic hose    PVC hose   Http://www. wfhuasu.com  Â
Pvc steel wire tube   Steel tube    Pvc steel wire hose  Http://
Weifang Yoga   Weifang Club   Weifang Taekwondo  Http:// www. wfhtxss.com Â
Electromagnetic iron remover , permanent magnet iron remover , iron remover http://
Copper and aluminum radiators , steel and aluminum radiators , steel radiators , aluminum radiators http://
Cucumber seedlings , eggplant seedlings , tomato seedlings , loofah seedlings , gift sets  Http://
Vibrating screen , nitrogen blowing instrument , pesticide residue speed measuring instrument , insect detection lamp , spore trapping instrument    Http://
Reverse osmosis scale inhibitor , reverse osmosis fungicide , reverse osmosis flocculant statement:
1. This article is reproduced by the editor of this website. It does not mean that this website agrees with its views and is responsible for its authenticity.
2. If the content of this work, copyright and other issues are involved in this article, please contact us within 30 days, we will deal with it in the first time!