Precautions for the use of Hengaode's new nitrogen blow dryer
Nitrogen Blow Dryer (Termovap Sample Concentrator) is also known as: nitrogen concentrator, nitrogen purge, nitrogen blow concentrator, sample concentrator, referred to as: nitrogen blower, nitrogen blower, concentrator. Normally, nitrogen is blown into the surface of the heated sample for sample concentration, which has the characteristics of time saving, convenient operation and easy control, and can quickly obtain the expected results. It is widely used in pesticide residue analysis, commodity inspection, food, environment, pharmaceutical, biological products and other industries and for sample preparation in liquid phase, gas phase and mass spectrometry analysis.
Background
"Reasonable Multi-residue Detection Technology of Pesticides in Agricultural Products and the Environment of Production Area (MRSM)" is an international advanced agricultural science and technology project organized and implemented by the Environmental Protection Institute of the Ministry of Agriculture and the Environmental Monitoring Station of the Ministry of Agriculture. The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the National Standardization Administration of the People's Republic of China also issued the "Testing Methods for Melamine in Raw Milk and Dairy Products" GB / T 22388-2008, which requires the use of YGC nitrogen dryer Sample preparation of melamine in dairy products: see 3.3: instruments and equipment in this test method.
Applications
It plays a practical role in pharmaceuticals, food safety, especially infant milk, medical testing, and pesticide residues, providing time-saving and efficient preparation and processing of samples in analytical methods such as gas chromatography (GC), liquid chromatography (HPLC), etc. The platform is the best supporting equipment for solid phase extraction technology.
Main classification
1. According to the structure of the heating tank of the instrument, it is divided into: square and circumferential nitrogen blower
2. According to the heating method of the instrument, it is divided into: metal dry bath type and water bath nitrogen blower
3. Among them, the metal dry bath heating carrier is divided into aluminum block hole type dry bath, aluminum bead bath, and fine yellow sand bath. Among them, the aluminum bead bath is the highest grade
The use method and maintenance of nitrogen blower
1) Do not use the nitrogen blower for materials with a flash point below 100 ° C.
(2) When using a nitrogen blower, hands and eyes should be protected.
(3) The nitrogen blower should be used in a fume hood to ensure good ventilation.
(4) Do not move the nitrogen blower during heating to prevent burns.
(5) Use a three-wire grounded power supply.
(6) Do not open the shell of the water bath with power on to prevent electric shock.
(7) The maintenance of the nitrogen blower should be performed directly by professionals or by the manufacturer. Improper replacement of components may cause damage to the nitrogen blower or cause safety hazards.
(8) Do not use nitrogen blower for highly flammable substances like petroleum ether.
(9) Do not use acidic or alkaline substances, otherwise the nitrogen blower will be damaged
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