+86-21-58386256
Nov 01, 2015· As a result, the optimal nitrogen-blowing time was selected to be 1.0 min. Download : Download high-res image (126KB) Download : Download full-size image; Fig. 4. Effects of nitrogen-blowing time on the recovery of RCT and CLB. Experimental conditions: extraction solvent, 2-DC, 40 μL; salt, (NH 4) 2 SO 4, 4.0 g; pH of sample solution, 12.0.
Aug 25, 2015· Cool Down with Liquid Nitrogen. Many low-temperature processes leverage nitrogen's cooling and freezing capabilities. Find out what methods are used in what applications and why. The chemical process industries (CPI) employ nitrogen — as a gas or liquid — in a wide range of applications (1, 2). Gaseous nitrogen (GAN) can inert vessels and ...
These multi-sample evaporators use a combination of nitrogen blow down, dry heat and vortex motion to evaporate samples and include an 8-place sample block. RapidVap N2/48 Evaporation Systems These multi-sample evaporators use a combination of nitrogen blow down, dry heat and vortex motion to evaporate up to 48 samples at once.
…unique membrane separation technology, nitrogen delivery is immediate to the sample concentrator. "Lock-it-and-leave-it" operation of the sample concentrator is maintained without downtime and without "running out of gas" mid blow-down. Features and Benefites Ideal…
Nitrogen Evaporators. Organomation manufactures and distributes three product lines of nitrogen evaporators for analytical chemistry sample preparation. Our N-EVAPs, MULTIVAPs, and MICROVAPs have been used for over 60 years in laboratories around the world. Organomation nitrogen evaporators combine a heated bath with nitrogen blow down for fast ...
Mar 18, 2020· Category：Nitrogen Blows Instrument Update time： Automatic closed-type nitrogen blowing concentrator is a fast, convenient, safe and environmentally friendly sample concentrator, mainly used in the field of sample pretreatment.
The nitrogen sample concentrator is used for concentrating or preparing samples in batches. It is used in processes such as drug screening, hormone analysis, liquid phase and mass spectrometry in the analysis of sample preparation. It works by blowing nitrogen in the surface of the sample whic
The rotary evaporator may cause sample loss when the solvent is boiling, while the nitrogen blowing instrument is accurate and sensitive during concentration to avoid sample loss. The nitrogen blowing instrument can process multiple samples at one time, which can highlight its advantages in multi-level and multi-factor repeated tests.
China Nitrogen Evaporator Visible Sample Concentrator Scientific Pressure Blower Nitrogen Blowing, Find details about China Nitrogen Blowing Apparatus, Nitrogen Evaporator from Nitrogen Evaporator Visible Sample Concentrator Scientific Pressure Blower Nitrogen Blowing - Hunan Runmei Gene Technology Co., Ltd.
Feb 23, 2021· Nitrogen gas possesses numerous physical qualities that make it uniquely suited to leak testing. It is an inert gas, which is hardly reactive under normal industrial conditions. Gaseous nitrogen also prevents oxidative/corrosive reactions by eliminating water …
The MiniVap® Gemini Sample Concentrator is a two-position nitrogen blowdown concentrator and evaporator for high throughput laboratories. The nitrogen blowdown process is ideal for lower boiling point organic solvents such as methanol, dichloromethane, hexane and acetonitrile. The robust design….
1,662 nitrogen blowing sample concentrator products are offered for sale by suppliers on Alibaba.com, of which other lab supplies accounts for 4%, other test instruments accounts for 1%, and gas generation equipment accounts for 1%.
Nov 01, 2013· Re: How to do Nitrogen blow down. Set up a supply of nitrogen (such as: from a nitrogen cylinder) with a small step-down regulator and route the slow nitrogen flow through a tube to a disposable glass pipet directed at your extract. Some extracts can be …
In Turbo Evaporator N2 Systems, a stream of nitrogen or dry gas is directed downward onto the surface of the sample. Nitrogen blow down reduces the partial pressure directly over the liquid to speed evaporation and help remove the solvent as it evaporates.. Vortex motion and dry heat may also be applied to further accelerate processing.
Nitrogen evaporators are used to prepare samples for analysis. Used in many industries, such as food, biotechnology, analytical chemistry, petroleum, and environmental sciences, nitrogen evaporators dry and concentrate samples so that tests like mass spectrometry, gas chromatography, and high performance liquid chromatography (HPLC) can be performed on them.
The nitrogen blow-down method introduces heated nitrogen into a test vial or a microplate to compensate for the latent heat of solvent evaporation, which accelerates the evaporation process. This technique is suitable for improving the sample concentration of liquid analytes or providing absolute dryness for chemical compounds, and can be used ...
Sep 27, 2021· Nitrogen blowing instrument is an instrument used to prepare concentrated samples in liquid phase, gas phase and mass spectrometry analysis tests. It mainly blows nitrogen into the surface of heated samples for sample concentration. The operation is time …
NBI-300. Visible Nitrogen Blowing Instrument . NBI visual nitrogen blowing instrument is mainly used for sample preparation and concentration, can be widely used in pesticide residues analysis, environmental analysis, biological analysis, commodity inspection, food and beverage analysis, pharmaceutical test and other fields
…sample instrument can be chosen to accommodate vials with a larger outside diameter in the range of 30-54 mm Gentle : N-EVAP nitrogen evaporators combine nitrogen blow down with a heated bath to gently concentrate delicate samples Individualized Control : Gas flow can be controlled at each…
Nitrogen Blow Down Dry Evaporators. RapidVap N2 and N2/48 Evaporation Systems are multiple-sample evaporators that use a combination of gentle forces — vortex motion and dry heat with nitrogen blow down — to quickly reduce samples to dryness or an end point volume.
Dry heating Nitrogen Blowing Instrument. It uses nitrogen or other inert gas to make sample containing unknown, more rapid separation, purification and anaerobic enrichment. This method has the characteristics of time saving, convenient and accurate. Widely used in pharmaceutical, medical test, pesticide residue detection, etc.
multiple-sample evaporators which use vortex motion and heat with either vacuum or nitrogen blow down to quickly reduce samples to dryness or an end point volume. Belmont original-ly used liquid nitrogen from Dewar or small compressed nitrogen cylinders to provide the stream of gas; these ap-proaches required a significant amount
10. Nitrogen preheating function, the gas introduced is hot gas (temperature: about 45 degrees), which speeds up the concentration reaction of the sample, and also prevents condensation between the volatilized concentrated liquid and the blowing needle, ensuring that the sample will not be contaminated and crossed Infection 11.
Lab Nitrogen Blowing Sample Concentrator CHL-D200 Series 1. CHL-D200 Sample Concertration consists of a base and stand assembly, sample holder and gas distribution system. Test tubes are held in a block. The gas at 5~10 psig passes through the distribution manifold. 2.
Mar 18, 2020· Category：Nitrogen Blows Instrument Update time： Closed-type water bath nitrogen blowing concentrato is a new product concentration instrument. After the product is designed and upgraded, the sample visualization degree is high and the air tightness is high.
Nitrogen Evaporator Sample Concentrator For 24 Samples. Product Details. Product Details. OLT-24 blowing nitrogen is mainly applied to the mass concentration of sample preparation, such as the hormone drug screening, analysis, liquid phase and gas phase and mass spectrometry analysis of sample preparation. Working principle: by blowing nitrogen ...
Oct 13, 2020· Nitrogen purging is an industrial process where unwanted gases and other impurities are eliminated from a manufacturing system environment using nitrogen gas. Due to its inert properties, nitrogen can be used to effectively displace oxygen and other pro-oxidative gases from industrial processes without reacting chemically with the substrates.
Nitrogen evaporators work by blowing nitrogen in the surface of the sample which is being heated to accelerate evaporating and separating the solvent in the sample without oxygen. Nitrogen blowdown is very useful for small sample volumes (under 50 mL), …
These gas generators incorporate a unique membrane separation technology which allows for immediate nitrogen delivery to the sample concentrator. The system offers a "lock it and leave it" operation of the sample concentrator with no downtime and without "running out of gas" mid blow-down.
เครื่องระเหยสารโดยใช้ไนโตรเจน (Nitrogen Blowing Sample Concentration) เครื่องล้างโดยใช้ความถี่สูง (Ultrasonic Cleaner) เครื่องวัดค่ากรด-ด่างสารละลาย (pH Meter)